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CONTACT US
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1.
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Which one of
the following is not an area of physics?
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A)
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Mechanics
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B)
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Optics
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C)
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Algebra
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D)
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Acoustics
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2.
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Motion
necessarily involves
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A)
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a change in
velocity.
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B)
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a change in
speed.
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C)
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a change in
direction.
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D)
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a change in
position.
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E)
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all of these
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3.
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The magnitude
of a displacement is ______________ the magnitude of the distance traveled.
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A)
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always unequal
to
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B)
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less than or
equal to
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C)
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always equal
to
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D)
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greater than
or equal to
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E)
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none of these;
the two cannot be compared.
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4.
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Displacement
divided by time gives
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A)
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average
acceleration.
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B)
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average
velocity.
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C)
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average
speed.
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D)
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average
distance.
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5.
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Average
speed multiplied by time gives
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A)
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average
acceleration.
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B)
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displacement.
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C)
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instantaneous
speed.
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D)
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distance.
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6.
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Distance
covered per unit of time is called
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A)
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speed.
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B)
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acceleration.
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C)
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velocity.
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D)
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displacement.
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7.
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The
straight-line distance and direction between two points are, together, called
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A)
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velocity.
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B)
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displacement.
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C)
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distance.
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D)
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acceleration.
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8.
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The magnitudes
of two horizontal displacements are 1 m and 9 m, respectively. Given that the
vectors may be in either the plus or the minus direction, they cannot
be added together to give a total displacement of
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A)
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10 m.
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B)
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–8 m.
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C)
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8 m.
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D)
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9 m.
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E)
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7 m.
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9.
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A speedometer
indicates ______________ if the automobile is traveling forward.
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A)
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instantaneous
acceleration
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B)
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instantaneous
speed
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C)
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instantaneous
velocity
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D)
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average speed
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E)
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average
acceleration
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10.
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If an object
moves with constant velocity,
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A)
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its speed is
constant.
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B)
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its direction
is constant.
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C)
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its average
speed is constant.
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D)
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its distance
traveled per unit time is constant.
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E)
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all of these
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11.
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If the
instantaneous velocity of an object is constant, then so is its
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A)
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velocity.
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B)
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distance.
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C)
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acceleration.
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D)
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displacement.
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12.
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The rate at
which an object's velocity changes with time is called its
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A)
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instantaneous
velocity.
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B)
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motion.
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C)
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speed.
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D)
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acceleration.
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13.
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An
automobile's acceleration may be changed by using the
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A)
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windshield
wipers.
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B)
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steering
wheel.
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C)
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radio.
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D)
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horn.
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14.
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An
automobile's acceleration cannot be changed by using the
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A)
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gas pedal.
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B)
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brake pedal.
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C)
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steering
wheel.
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D)
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stick shift.
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E)
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turn signal.
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15.
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An
acceleration may result from
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A)
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a change in
speed.
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B)
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a change in
direction.
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C)
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a change in
both speed and direction.
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D)
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all of these
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16.
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For which of
the following is the acceleration constant?
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A)
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Nonuniform
speed
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B)
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Free fall
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C)
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Uniform
circular motion
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D)
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None of these
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17.
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Velocity is
similar to speed, but a ________ is also involved in velocity.
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A)
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acceleration
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B)
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direction
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C)
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position
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D)
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scalar
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18.
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Which one of
the following is true for deceleration?
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A)
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The
acceleration is in the direction opposite the motion.
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B)
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The
acceleration is zero.
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C)
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The
acceleration is necessarily negative.
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D)
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The velocity
remains constant.
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19.
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The distance
traveled by an automobile moving at a constant velocity is
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A)
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directly
proportional to the time.
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B)
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directly
proportional to the time squared.
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C)
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inversely
proportional to the time squared.
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D)
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inversely
proportional to the time.
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E)
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none of these
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20.
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An object that
is moving in a linear path with an acceleration in the direction opposite to
the motion has a(n) ______________ velocity.
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A)
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constant
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B)
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increasing
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C)
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decreasing
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D)
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none
of these
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21.
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An object that
is moving in a linear path with an acceleration at a right angle to the
motion has a(n) ______________ velocity.
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A)
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changing
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B)
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increasing
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C)
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decreasing
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D)
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constant
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22.
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An object that
is moving in a linear path with an acceleration in the direction of motion
has a(n) ______________ velocity.
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A)
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constant
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B)
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increasing
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C)
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decreasing
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D)
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none
of these
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23.
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As a block
slides down a 40° frictionless incline, its acceleration
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A)
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decreases with
distance.
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B)
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remains
constant.
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C)
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is greatest at
the bottom of the incline.
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D)
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is greatest at
the top of the incline.
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24.
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Which of the
following is a possible unit of acceleration?
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A)
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m/s2
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B)
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m ´ s
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C)
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m2/s
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D)
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m/s
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25.
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If the
magnitude of the velocity of an object increases, we may be sure that during
the time of this increase,
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A)
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the object is
accelerated.
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B)
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the
acceleration of the object increases.
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C)
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the object is
moving in a straight path.
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D)
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the object is
changing direction.
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E)
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none of these
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26.
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A freely
falling object
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A)
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has a
uniformly increasing velocity.
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B)
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is unaffected
by gravity.
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C)
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has a
uniformly increasing acceleration.
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D)
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has a
uniformly increasing displacement.
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27.
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An object in
free fall has
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A)
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a constant
speed.
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B)
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a constant
velocity.
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C)
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a velocity
that changes 9.8 m/s each second.
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D)
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an
acceleration that depends on its mass.
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28.
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An object with
a mass of 8 kg is dropped and takes 5 s to hit the ground. Then another
object with a mass of 16 kg is dropped from the same point. How long does it
take to hit the ground?
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A)
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5 s
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B)
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10 s
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C)
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3 s
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D)
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25 s
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E)
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125 s
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29.
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A car is
moving down a freeway in a straight line at a constant rate of 24.0 m/s for
4.0 s. Its acceleration is
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A)
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9.8 m/s2.
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B)
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9.8 m/s.
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C)
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zero.
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D)
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24.0 m/s.
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E)
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6.0 m/s2.
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30.
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An object is
dropped from a vertical distance of 31.7 m above the ground, and it takes 2.54 sec to fall that distance. A
second identical object to launched from the same height, with a horizontal
velocity of 64.0 m/s. How long does
the second object take to fall the 31.7 m?
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A)
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More
than 2.54 sec
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B)
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Almost 2.54
sec.
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C)
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Less
than 2.54 sec
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D)
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Exactly 2.54
sec
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E)
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Much
less than 2.54 sec
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31.
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A freely
falling object has a constant acceleration of 9.8 m/s2. This means
that
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A)
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the object's
displacement changes by 9.8 m every second squared.
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B)
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the object's
speed increases by 9.8 m/s each second.
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C)
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the object's
acceleration increases by 9.8 m/s2 each second.
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D)
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the object
travels 9.8 m each second.
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32.
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An object that
is moving with an acceleration different from zero will always have a(n)
______________ velocity.
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A)
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changing
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B)
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increasing
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C)
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constant
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D)
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decreasing
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33.
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The distance
traveled by a dropped object in free fall is directly proportional to
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A)
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the time
squared.
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B)
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its weight.
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C)
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its mass.
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D)
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none of these.
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34.
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Which of the
following statements is not true?
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A)
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Displacement
has a direction and a magnitude.
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B)
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Acceleration
has a magnitude only.
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C)
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Speed has a
magnitude only.
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D)
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Velocity has a
magnitude and a direction.
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35.
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All the
following may be represented by vectors except
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A)
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velocity.
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B)
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acceleration.
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C)
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speed.
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D)
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displacement.
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36.
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An object in
uniform circular motion has
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A)
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constant
acceleration.
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B)
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variable
radial distances.
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C)
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constant
velocity.
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D)
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constant
speed.
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37.
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In the
equation ac= v2/r for centripetal
acceleration, the r stands for
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A)
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diameter.
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B)
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distance.
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C)
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radius.
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D)
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rate.
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38.
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In the
equation ac= v2/r for centripetal
acceleration, the v stands for
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A)
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volume.
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B)
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very.
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C)
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speed.
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D)
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velociraptor.
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39.
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An object
travels in a circle of radius 10.0 m with a constant speed of 3.0 m/s. What
is the direction of its acceleration?
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A)
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Toward the
center of the circle
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B)
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Normal to the
plane of the circle
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C)
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Insufficient
data given for determination
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D)
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Tangential to
the circle
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E)
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None of these
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40.
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Centripetal
means
|
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A)
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center seeking
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B)
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pulls outward
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C)
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constant
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D)
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fast
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E)
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none of these
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41.
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The magnitude
of the acceleration of an object moving in a circle at constant speed is
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A)
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variable.
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B)
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directly
proportional to the speed squared.
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C)
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directly
proportional to the speed.
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D)
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directly
proportional to the radius of the circle squared.
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42.
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The direction
of the acceleration of an object moving in a circle at constant speed is
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A)
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changing,
but pointing in a predictable direction.
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B)
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constant and
pointing in only one direction.
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C)
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constant
and pointing in two directions.
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D)
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none of these
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43.
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The magnitude
of the acceleration of an object moving in a circle at constant speed is
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A)
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inversely
proportional to the speed squared.
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B)
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inversely
proportional to the speed.
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C)
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inversely
proportional to the radius of the circle squared.
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D)
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inversely
proportional to the radius of the circle.
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44.
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If the speed
of an object in circular motion is increased by a factor of 5, its
centripetal acceleration for the same radius will be multiplied by a factor
of
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A)
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0.04.
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B)
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0.2.
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C)
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2.24.
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D)
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25.
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E)
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5.
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45.
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A projectile's
vertical velocity component
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A)
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changes most
rapidly near the top of its trajectory.
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B)
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changes at a
constant rate.
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C)
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changes most
rapidly near the bottom of its trajectory.
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D)
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does not
change.
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46.
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A projectile's horizontal velocity component
(ignoring air resistance)
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A)
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does not
change.
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B)
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changes most
rapidly near the bottom of its trajectory.
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C)
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changes at a
variable rate.
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D)
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changes at a
constant rate.
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47.
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In projectile
motion, which of the following is not constant?
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A)
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Vertical
velocity
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B)
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Horizontal
velocity
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C)
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Acceleration
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D)
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None of these
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48.
|
A golfer hits
a ball on a level fairway at an angle of 55° relative to the horizontal, and
it lands on the green. Another golfer hits a ball with the same speed but at
another angle, and it lands on the green by the other ball. What was the
launch angle for the second golfer?
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A)
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35°
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B)
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25°
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C)
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40°
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D)
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45°
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E)
|
15°
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49.
|
A golfer hits
a ball on a level fairway at an angle of 35° relative to the horizontal, and
it lands on the green. Another golfer hits a ball with the same speed but at
an angle of 55°, and it lands on the green by the other ball. Which statement
is accurate for this situation?
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A)
|
One ball is in
the air longer than the other.
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B)
|
One ball
experiences a greater acceleration while in free flight.
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C)
|
One ball
experiences a smaller acceleration while in free flight.
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D)
|
Two balls hit
at the same speed but different angles will always land in the same location.
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E)
|
Two balls hit
at the same speed but different angles can never land in the same location.
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50.
|
When running
and jumping to score, a basketball player seems to “hang” in the air because
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A)
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his or her
acceleration is zero.
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B)
|
his or her
horizontal velocity is quite small.
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C)
|
both
components of motion are zero.
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D)
|
his or her
vertical velocity is quite small.
|
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E)
|
levitation is
possible with practice.
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51.
|
A continuous
change in position is called ______________.
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52.
|
The
straight-line distance and direction between two points are, together, called
______________.
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53.
|
Distance is
a(n) ______________ quantity.
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54.
|
A speedometer
registers ______________.
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55.
|
A compass
registers ______________.
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56.
|
Speed is a(n)
______________ quantity.
|
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57.
|
For there to
be an acceleration, there must necessarily be a change in ______________.
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58.
|
If an object
has a constant velocity, then its acceleration is ______________.
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59.
|
In free fall,
the _______________ is constant.
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60.
|
Physics deals
with matter, motion, force, and ________________.
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61.
|
Physics deals
with force, energy, motion, and ________________.
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62.
|
Free-fall
motion neglects ___________________.
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63.
|
A rifle bullet
shot horizontally has a vertical acceleration of ______________.
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64.
|
Dropped
objects on the Moon fall at a slower rate than on Earth because of a smaller
______________.
|
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65.
|
The distance a
dropped object travels is proportional to the ______________ of the time.
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66.
|
In
straight-line motion, if a moving object slows down, the direction of the
acceleration is ______________ the direction of the velocity.
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67.
|
In
straight-line motion, if a moving object speeds up, the direction of the
acceleration is ______________ the direction of the velocity.
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68.
|
On Earth, the
magnitude of the acceleration of a vertical projectile at its maximum height
is equal to ______________.
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69.
|
On Earth, the
magnitude of the velocity of a vertical projectile at its maximum height is
equal to ______________.
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70.
|
A(n)
______________ quantity has both magnitude and direction.
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71.
|
A(n)
______________ quantity has only magnitude.
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72.
|
Temperature is
an example of a(n) ______________ quantity.
|
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73.
|
An object
moving in a circle with a constant speed has a(n) ______________ directed
toward the center of the circle.
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74.
|
______________
acceleration is necessary for uniform circular motion.
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75.
|
What two
quantities are constant in uniform circular motion? ______________ and
______________
|
|
76.
|
The SI unit of
centripetal acceleration is ______________.
|
|
77.
|
The
centripetal acceleration of an automobile in uniform circular motion on a
flat circular track is supplied by ______________.
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78.
|
For an object
in uniform circular motion, the acceleration points toward ______________.
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79.
|
A rifle bullet
shot horizontally at a velocity of 9.8 m/s has a horizontal acceleration of
______________.
|
|
80.
|
Two objects
are in uniform circular motion at the same speed but at different radii. The
one with the ______________ radius has the largest centripetal acceleration.
|
|
81.
|
At the maximum
height of a projectile launched at an angle to the horizontal, the
projectile's velocity is in a ______________ direction.
|
|
82.
|
Under ideal
conditions, a projectile with a given initial speed at an angle of 85° has
the same range as a projectile at an angle of ______________ with the same
initial speed.
|
|
83.
|
Because of air
resistance, an object falling a great distance may reach a
______________ velocity.
|
|
84.
|
A student
travels from St. Louis to Indianapolis, a distance of 210 mi, in 6.0 h. The
return trip over the same route takes 7.0 h. What is the average speed for
a. the first
half of the trip?
b. the second
half of the trip?
c. the total
trip?
|
|
85.
|
On a trip, a
family travels 200 km in 2.5 h on the first day, 300 km in 4.0 h on the
second day, and 250 km in 3.5 h on the third day. What was the average speed,
in kilometers per hour, for the total trip?
|
|
86.
|
An automobile
traveling on a straight, level road at 15 km/h speeds up to 90 km/h in 30 s.
What was the magnitude of the auto's acceleration, in meters per second
squared?
|
|
87.
|
An object is
dropped (g = 9.80 m/s2) and falls for 5.00 s before hitting
the ground.
a. How far has
the object fallen?
b. What is the
final velocity?
c. What is the
final acceleration?
|
|
88.
|
A ball is
thrown up in the air with an initial velocity of 78.4 m/s upward. How long
does it take the ball
a. to go up?
b. to come
down after reaching maximum height?
|
|
89.
|
The following
data refer to a car traveling west:
t (s)
0 1 2
3 4
--------------------------
v (m/s) 30
25 20 15
10
Find the
magnitude and direction of the acceleration.
|
|
90.
|
A car travels
at a constant speed of 100.0 km/h around a circular track with a diameter of
1.00 km. What is the magnitude of the car's centripetal acceleration, and
what supplies this?
|
|
91.
|
The following
are data for an accelerating car:
t (s)
0 5 10 15
20
------------------------
v (m/s) 0
3 6 9
12
a. Is this car
undergoing uniform acceleration?
b. If so, what
is the acceleration?
|
|
92.
|
A ball dropped
from the top of a building hits the ground 8.0 s later. How high is the
building (in meters)?
|
|
93.
|
On the Moon,
what is the approximate value for the acceleration due to gravity?
|
|
94.
|
A stone is
dropped from the top of a well that has water in it at a depth of 65.0 m. How
long does it take the stone to reach the water?
|
|
95.
|
A rock dropped
down a well takes 1.8 s to hit the water. How far below the top of the well
is the surface of the water?
|
|
96.
|
What is the
displacement of a hiker who travels 3.0 km east and then 4.0 km north?
|
|
97.
|
An ant on a
picnic table travels 30 cm eastward, then 15 cm northward, then 20 cm
westward, and finally 15 cm southward. What is the magnitude of its net
displacement?
|
Answer Key
|
1.
|
C
|
|
2.
|
D
|
|
3.
|
B
|
|
4.
|
B
|
|
5.
|
D
|
|
6.
|
A
|
|
7.
|
B
|
|
8.
|
E
|
|
9.
|
B
|
|
10.
|
E
|
|
11.
|
A
|
|
12.
|
D
|
|
13.
|
B
|
|
14.
|
E
|
|
15.
|
D
|
|
16.
|
B
|
|
17.
|
B
|
|
18.
|
A
|
|
19.
|
A
|
|
20.
|
C
|
|
21.
|
A
|
|
22.
|
D
|
|
23.
|
B
|
|
24.
|
A
|
|
25.
|
A
|
|
26.
|
A
|
|
27.
|
C
|
|
28.
|
A
|
|
29.
|
C
|
|
30.
|
D
|
|
31.
|
B
|
|
32.
|
A
|
|
33.
|
A
|
|
34.
|
B
|
|
35.
|
C
|
|
36.
|
D
|
|
37.
|
C
|
|
38.
|
C
|
|
39.
|
A
|
|
40.
|
A
|
|
41.
|
B
|
|
42.
|
A
|
|
43.
|
D
|
|
44.
|
D
|
|
45.
|
B
|
|
46.
|
A
|
|
47.
|
A
|
|
48.
|
A
|
|
49.
|
A
|
|
50.
|
D
|
|
51.
|
motion
|
|
52.
|
displacement
|
|
53.
|
scalar
|
|
54.
|
instantaneous speed
|
|
55.
|
direction
|
|
56.
|
scalar
|
|
57.
|
velocity
|
|
58.
|
zero
|
|
59.
|
acceleration
|
|
60.
|
energy
|
|
61.
|
matter
|
|
62.
|
frictional effects, or air resistance
|
|
63.
|
9.8 m/s2, or 32 ft/s2 (gravity)
|
|
64.
|
acceleration due to gravity
|
|
65.
|
square
|
|
66.
|
opposite to, or antiparallel to
|
|
67.
|
along, the same as, or parallel to
|
|
68.
|
g, or 9.8 m/s2
|
|
69.
|
zero
|
|
70.
|
vector
|
|
71.
|
scalar
|
|
72.
|
scalar
|
|
73.
|
acceleration
|
|
74.
|
Centripetal
|
|
75.
|
radial distance (radius); speed
|
|
76.
|
meters per second squared (m/s2)
|
|
77.
|
friction
|
|
78.
|
the center of the circle
|
|
79.
|
zero
|
|
80.
|
smallest or least
|
|
81.
|
horizontal
|
|
82.
|
5°
|
|
83.
|
terminal
|
|
84.
|
a. 35 mi/h
b. 30 mi/h
c. 32 mi/h
|
|
85.
|
75 km/h
|
|
86.
|
0.69 m/s2
|
|
87.
|
a. 123 m
b. 49 m/s,
downward
c. 9.80 m/s2, downward
|
|
88.
|
a. 8.0 s
b. 8.0 s
|
|
89.
|
–5.0 m/s2, or 5.0 m/s2 east
|
|
90.
|
1.54 m/s2, friction
|
|
91.
|
a. Yes
b. 0.6 m/s2
|
|
92.
|
310 m (rounded to two significant figures)
|
|
93.
|
1.6 m/s2
|
|
94.
|
3.6 s
|
|
95.
|
16 m
|
|
96.
|
5.0 km
|
|
97.
|
10 cm
|
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