Newton's Third Law of Motion

Mr. Fullerton explains Newton's Third Law of Motion, emphasizing that forces come in pairs. He provides examples like punching a wall, swimming, and jumping to illustrate action-reaction pairs. The video includes sample problems and encourages viewers to identify force pairs in various scenarios.

What does Newton's Third Law of Motion state about forces?

• Forces are always repulsive.

• Forces are always attractive.

• Forces always come in pairs.

• Forces can exist independently.

If you push a wall with a force of 100 newtons, what force does the wall exert back on you?

• 200 newtons

• 150 newtons

• 50 newtons

• 100 newtons

When a cat runs forward, what action does it perform according to Newton's Third Law?

• Pushes forward on the air

• Pushes backward on the ground

• Pushes upward on the ground

• Pushes downward on the air

In swimming, how does a swimmer move forward according to Newton's Third Law?

• By pushing backward on the water

• By pushing forward on the water

• By pulling the water forward

• By pulling the water backward

What happens when a girl kicks a soccer ball according to Newton's Third Law?

• The ball exerts a force on the ground.

• The ball exerts a force on the girl's foot.

• The girl's foot exerts a force on the ground.

• The girl's foot exerts a force on the air.

How does a rocket move forward in space according to Newton's Third Law?

• By pulling gases forward

• By expelling gases backward

• By pushing the air forward

• By pulling the air backward

If the Earth exerts a gravitational force on the Moon, what does the Moon do according to Newton's Third Law?

• Exerts a larger force on the Earth

• Exerts no force on the Earth

• Exerts a smaller force on the Earth

• Exerts an equal force on the Earth

A 400 newton girl pushes a sailboat with a force of 100 newtons. What force does the sailboat exert on the girl?

• 100 newtons

• 50 newtons

• 150 newtons

• 200 newtons

When a carpenter hits a nail with a hammer, what force does the nail exert on the hammer?

• A smaller force

• No force

• An equal force

• A larger force

In the scenario of a frog sitting on a lily pad, what action-reaction pair can be identified?

• Frog pulling backward on the lily pad and lily pad pulling forward on the frog

• Frog pushing forward on the lily pad and lily pad pushing backward on the frog

• Frog pulling up on the lily pad and lily pad pulling down on the frog

• Frog pushing down on the lily pad and lily pad pushing up on the frog