Chapter 5homepage.smc.edu/said_asma/Course2/05_Clicker_Questions.pdf · 2010-09-29 · A force is a...
Transcript of Chapter 5homepage.smc.edu/said_asma/Course2/05_Clicker_Questions.pdf · 2010-09-29 · A force is a...
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Chapter 5
Newton’s Third Law of Motion
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A force is a push or pull that is
required to change the
a. composition of an object.
b. the state of motion of an object.
c. color of an object.
d. temperature of an object.
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A force is a push or pull that is
required to change the
a. composition of an object.
b. the state of motion of an object.
c. color of an object.
d. temperature of an object.
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A force interaction requires
at least
a. one force.
b. two forces.
c. an action force.
d. a reaction force.
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A force interaction requires
at least
a. one force.
b. two forces.
c. an action force.
d. a reaction force.
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Whenever one object exerts a force
on a second object, the second object
exerts a force on the first that
a. is opposite in direction.
b. is equal in magnitude.
c. occurs at the same time.
d. All of these.
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Whenever one object exerts a force
on a second object, the second object
exerts a force on the first that
a. is opposite in direction.
b. is equal in magnitude.
c. occurs at the same time.
d. All of these.
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The force that propels a heavy truck
along a highway is provided by
a. gravity.
b. Newton’s laws of motion.
c. the highway pushing back on the wheels of the
truck.
d. the air drag acting on the truck.
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The force that propels a heavy truck
along a highway is provided by
a. gravity.
b. Newton’s laws of motion.
c. the highway pushing back on the wheels of the
truck.
d. the air drag acting on the truck.
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Earth pulls on the Moon with a
certain force. Relative to this force,
the pull of the Moon on Earth is
a. a little less.
b. the same.
c. a little greater.
d. much less.
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Earth pulls on the Moon with a
certain force. Relative to this force,
the pull of the Moon on Earth is
a. a little less.
b. the same.
c. a little greater.
d. much less.
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A boulder falls due to gravity. The
reaction to the force on the boulder is
a. air resistance.
b. the boulder pulling up on Earth.
c. the boulder being pulled downward by Earth.
d. Actually, all of these.
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A boulder falls due to gravity. The
reaction to the force on the boulder is
a. air resistance.
b. the boulder pulling up on Earth.
c. the boulder being pulled downward by Earth.
d. Actually, all of these.
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If action is a foot kicking a soccer ball,
the reaction is an equal force on the
a. ball.
b. foot.
c. ground.
d. air drag of motion.
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If action is a foot kicking a soccer ball,
the reaction is an equal force on the
a. ball.
b. foot.
c. ground.
d. air drag of motion.
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a. almost equal.
b. equal.
c. unequal.
d. zero.
Two identical carts have a compressed
spring between them. When the spring is
released, the carts recoil from each other with
oppositely directed accelerations that are
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Two identical carts have a compressed
spring between them. When the spring is
released, the carts recoil from each other with
oppositely directed accelerations that are
a. almost equal.
b. equal.
c. unequal.
d. zero.
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An axe is swung against a tree with
a blow of 4000 N. The force that acts
on the axe during this event is
a. less than 4000 N.
b. 4000 N.
c. greater than 4000 N.
d. 0.
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An axe is swung against a tree with
a blow of 4000 N. The force that acts
on the axe during this event is
a. less than 4000 N.
b. 4000 N.
c. greater than 4000 N.
d. 0.
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When the neck of an air-filled balloon
is untied and air escapes, the balloon
shoots through the air. The force that
propels the balloon is provided by the
a. surrounding air.
b. ejected air.
c. air still in the balloon.
d. ground beneath the balloon.
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When the neck of an air-filled balloon
is untied and air escapes, the balloon
shoots through the air. The force that
propels the balloon is provided by the
a. surrounding air.
b. ejected air.
c. air still in the balloon.
d. ground beneath the balloon.
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When you jump vertically upward,
strictly speaking, you cause Earth to
a. also move upward with you.
b. remain stationary.
c. move downward.
d. move sideways a bit.
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When you jump vertically upward,
strictly speaking, you cause Earth to
a. also move upward with you.
b. remain stationary.
c. move downward.
d. move sideways a bit.
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A mosquito has a collision with the windshield
of a massive high-speed truck. The force of
impact on the mosquito is______ the force on
the truck, and the acceleration of the mosquito
is________ the deceleration of the truck.
a. less than; less than
b. more than; less than
c. the same as; less than
d. the same as; more than
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a. less than; less than
b. more than; less than
c. the same as; less than
d. the same as; more than
A mosquito has a collision with the windshield
of a massive high-speed truck. The force of
impact on the mosquito is______ the force on
the truck, and the acceleration of the mosquito
is________ the deceleration of the truck.
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A massive truck and a golf cart have a
head-on collision with equal amounts of
force. The least amount of acceleration
occurs for
a. the truck.
b. the cart, if it is initially at rest.
c. the cart, whether at rest or moving.
d. neither, for they undergo the same acceleration.
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A massive truck and a golf cart have a
head-on collision with equal amounts of
force. The least amount of acceleration
occurs for
a. the truck.
b. the cart, if it is initially at rest.
c. the cart, whether at rest or moving.
d. neither, for they undergo the same acceleration.
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When a squid pushes against water, the
squid moves forward because the water
a. offers no resistance.
b. exerts a net backward force.
c. exerts a net forward force.
d. has the same density as the fish.
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When a squid pushes against water, the
squid moves forward because the water
a. offers no resistance.
b. exerts a net backward force.
c. exerts a net forward force.
d. has the same density as the fish.
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The net force on a kicked soccer
ball can be zero when
a. action and reaction both act on the ball.
b. it is kicked by two feet with equal and opposite
amounts of force.
c. it is kicked in the same direction by two feet.
d. it is kicked by two feet at right angles to each
other.
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The net force on a kicked soccer
ball can be zero when
a. action and reaction both act on the ball.
b. it is kicked by two feet with equal and opposite
amounts of force.
c. it is kicked in the same direction by two feet.
d. it is kicked by two feet at right angles to each
other.
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The amount of force with which a
boxer’s punch lands depends on the
a. physical condition of the boxer.
b. mass of what’s being hit.
c. boxer’s attitude.
d. None of these.
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The amount of force with which a
boxer’s punch lands depends on the
a. physical condition of the boxer.
b. mass of what’s being hit.
c. boxer’s attitude.
d. None of these.
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You run horizontally at 4 m/s in a
vertically falling rain that falls at 4 m/s.
Relative to you, the raindrops are falling
at an angle of
a. 0°.
b. 45°.
c. 53°.
d. 90°.
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You run horizontally at 4 m/s in a
vertically falling rain that falls at 4 m/s.
Relative to you, the raindrops are falling
at an angle of
a. 0°.
b. 45°.
c. 53°.
d. 90°.
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The resultant of a 30-N force and a
40-N force cannot possibly be
a. 10 N.
b. 50 N.
c. 70 N.
d. 80 N.
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The resultant of a 30-N force and a
40-N force cannot possibly be
a. 10 N.
b. 50 N.
c. 70 N.
d. 80 N.
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When Nellie Newton hangs by a pair of
ropes at different angles to the vertical, the
rope tension is greater in the rope that
makes the
a. smallest angle to the vertical.
b. largest angle to the vertical.
c. Depends on the lengths of the ropes.
d. All of these, to some degree.
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When Nellie Newton hangs by a pair of
ropes at different angles to the vertical, the
rope tension is greater in the rope that
makes the
a. smallest angle to the vertical.
b. largest angle to the vertical.
c. Depends on the lengths of the ropes.
d. All of these, to some degree.
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Horizontal and vertical components
of velocity are equal when the
projection angle is
a. less than 45°.
b. equal to 45°.
c. greater than 45°
d. vertical.
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Horizontal and vertical components
of velocity are equal when the
projection angle is
a. less than 45°.
b. equal to 45°.
c. greater than 45°
d. vertical.