Newton's Third Law

The figure shows __________________

• balanced force

• unbalanced force

• force pairs ( action and reaction force)

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NGSS.MS-PS2-1

What is Newton's Third Law of Motion?

• An object in motion will stay in motion; an object at rest will stay at rest until acted on by an unbalanced force.

• The more mass an object has, the more force is needed to make the object move.

• For every action, there is an equal and opposite reaction.

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NGSS.MS-PS2-1

Newton's Third Law of Motion states that...

• ... for every action, there is an equal and opposite reaction.

• ... for every up, there is a down.

• ... for every smile, there is a frown.

• ... for every cloud, there is a silver lining.

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NGSS.MS-PS2-1

Newton's Third Law is sometimes called the ___ Law.

• Counteraction

• Action/Reaction

• Stop/Go

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NGSS.MS-PS2-1

Complete the sentence to show Newton's Third Law. (choose TWO) A defender pushes on a person while the person pushes ___.

• the same amount

• the same direction

• back

• the ground

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NGSS.MS-PS2-1

Because it has the ___, the last sphere will move away with the same velocity with which the first sphere impacted the middle three spheres.

• lower mass

• same mass

• higher mass

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which law is this: Every force has an equal and opposite reaction force.

• Newtons First Law

• Newtons Second Law

• Newtons Third Law

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NGSS.MS-PS2-1

Newtons third law states that for every action, there is an_________ reaction

• unequal and opposite

• stronger and opposite

• equal and similar

• equal and opposite

Tags

NGSS.MS-PS2-1

Newton's third law of motion describes equal and opposite forces:

• between two objects

• acting on a single object

• acting only when objects are in contact

• between solid objects but not liquids or gases

Tags

NGSS.MS-PS2-1

If you lean against a brick wall, the wall:

• pushes back with an equal force

• pushes back with a smaller force

• pushes back with a greater force

• does not push back