Forces Equal and Opposite (Action - Reaction)

Law explaining why when you put a book on a table the table pushes back on the book

• Law of Action- Reaction

• Law of Force, Mass, and Acceleration

• Law of Inertia

• Law of Equal Forces

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NGSS.MS-PS2-1

When Ronda Rousey got kicked in the face, what is the pair of forces?

• Foot pushes on face, and face pushes back on foot.

• Foot pushes on face, and she punches back

• Foot pushes on face and causes friction

• Foot pushes on face and face hits the floor

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NGSS.MS-PS2-1

A bus hits a bug and the bug splatters on the windshield. Which hits with the greater force?

• The bus

• The bug

• They hit with the same amount of force

• There is no force

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NGSS.MS-PS2-1

Newton's third law states that any action will have a(n) _______ and ______ reaction

• equal and similar

• equal and opposite

• equal and different

• lesser and opposite

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NGSS.MS-PS2-1

A book rests on a table.  The force of gravity pulls down on the book with a force of 20 newtons. What prevents the books from accelerating downward ?   

• The table presses back up on the book with an equal and opposite force of 20 newtons.
• The table presses back up on the book with a force greater than 20 newtons.
• The table and the book together are accelerating downwards at  9.8 m/sec²
• The inertia of the book holds it up

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NGSS.MS-PS2-2

You hit a wall with a stick. The equal but opposite reaction would be....

• the wall pushes against you.

• the stick pushes against you.

• you push against the stick.

• the wall pushes against the stick.

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NGSS.MS-PS2-1

When a cannon fires a cannonball we observe Newton's third law. Which force is the ACTION force?

• The cannonball being fired forward

• The cannon rolling forward

• The cannon rolling backward

• The cannon's wheels digging into the ground

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NGSS.MS-PS2-1

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

Tags

NGSS.MS-PS2-1

What is NOT an example of Newton's Third Law?

• Two people pushing against each other with the same force and in opposite directions.

• You have to push a full shopping cart with more force than an empty cart.

• When you sit on a chair, you push down on the chair with the same amount of force that the chair pushes on you.

• When you do the card and coin trick: coin sitting on top of a card over a cup. When you flick the card out, the coin falls into the cup.

Tags

NGSS.MS-PS2-1

Newton's _____ Law of Motion means that for every force there is a reaction force that is equal in size, but opposite in direction.

• First
• Second
• Third
• Fourth

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NGSS.MS-PS2-1