Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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A
feather and a rock dropped at the same time from the same height would land at the same time when
dropped a. | by Galileo in
Italy | c. | by an astronaut
on the moon. | b. | by Newton in England. | d. | by an astronaut on the space shuttle. | | | | |
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2.
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Newton’s first law of motion applies a. | to moving
objects. | c. | to objects that
are accelerating. | b. | to objects that are not moving. | d. | Both (a) and (b) | | | | |
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3.
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A
golf ball and a bowling ball are moving at the same velocity. Which has more
momentum? a. | the golf ball,
because it has less mass | b. | the bowling ball, because it has more
mass | c. | They both have
the same momentum because they have the same velocity. | d. | There is no way
to know without additional information. | | |
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4.
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If
three balls of different materials were dropped at the same time from the same height, which would
hit the ground first? (Assume there is no air resistance.) a. | a tennis
ball | c. | a solid steel
ball | b. | a solid rubber
ball | d. | They would all
hit at the same time. | | | | |
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5.
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Orbital motion is a combination of forward motion and a. | frictional
resistance. | c. | horizontal
acceleration. | b. | free fall. | d. | weightlessness. | | | | |
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6.
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According to Newton’s first law of motion, a moving object that is not acted on
by an unbalanced force will a. | remain in motion. | c. | transfer its energy to another
object. | b. | eventually come to a stop. | d. | accelerate in the absence of
friction. | | | | |
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7.
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Air
resistance is a. | sliding
friction. | c. | fluid
friction. | b. | rolling friction. | d. | static friction. | | | | |
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8.
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The
amount of air resistance acting on an object depends on the object's a. | size and
shape. | c. | density and
mass. | b. | mass and weight. | d. | None of the above | | | | |
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9.
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Parachutes slow skydivers to a safer terminal velocity because
parachutes a. | increase air
resistance. | c. | increase
gravitational pull. | b. | decrease air resistance. | d. | decrease gravitational pull. | | | | |
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10.
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Astronauts float inside the space shuttle because they a. | are
massless. | b. | have no gravitational force acting on
them. | c. | are in free fall. | d. | are
weightless. | | |
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11.
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Newton's third law of motion states that if a force is exerted on an object, another
force occurs that a. | is equal in size
and opposite in direction. | b. | is in the same direction and size. | c. | is equal in
speed and opposite in direction. | d. | is in the same direction and speed. | | |
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You
have four vehicles, all driving at the same velocity side-by-side on a four-lane highway. They are a
fully-loaded truck, an empty truck, a midsize van, and a small car.
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12.
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Which
one has the MOST momentum? a. | the fully-loaded truck | c. | the midsize van | b. | the empty
truck | d. | the small
car | | | | |
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13.
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Inertia is used when explaining Newton's a. | first law of
motion. | c. | third law of
motion. | b. | second law of motion. | d. | law of conservation of momentum. | | | | |
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14.
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After
a motor pulls the roller coaster cars up the first hill, what keeps the cars moving up and over the
following hills, turns, and loops? a. | gravity | c. | acceleration | b. | inertia | d. | all of the
above | | | | |
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15.
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Catapults create a. | free fall. | c. | projectile motion. | b. | orbiting. | d. | gravitational
force. | | | | |
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16.
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Because of projectile motion, when aiming at a target you should always
aim a. | above the bull's
eye. | c. | to the left of
the bull's eye. | b. | below the bull's eye. | d. | to the right of the bull's eye. | | | | |
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17.
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If a
car driver suddenly makes a sharp turn, the passenger slides to the side of the car because
of a. | inertia. | c. | gravity. | b. | free fall. | d. | friction. | | | | |
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18.
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When
you bump into someone standing still, you can knock them over because of a. | projectile
motion. | c. | gravity. | b. | momentum. | d. | friction. | | | | |
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19.
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The
curved path traveled by a thrown baseball is known as a. | orbiting. | c. | projectile
motion. | b. | centripetal acceleration. | d. | centripetal force. | | | | |
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20.
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Orbiting objects appear to be weightless because they are a. | in free
fall. | c. | outside of
Earth's atmosphere. | b. | weightless. | d. | in space. | | | | |
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