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# Chapter 5 - PowerPoint PPT Presentation

Chapter 5. Newton’s Third Law of Motion. 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. A force is a push or pull that is required to change the.

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## Chapter 5

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### Chapter 5

Newton’s Third Law of Motion

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.

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.

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.

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.

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.

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.

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.

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.

A boulder falls due to gravity. The reaction to the force that the earth pulls downward 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.

A boulder falls due to gravity. The reaction to the force that the earth pulls downward 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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

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.

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.

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.

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.

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.

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.

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.

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.