Newton's Third Law of Motion

What is Newton's third law of motion?

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

• Objects in motion tend to stay in motion

• Force equals mass times acceleration

• An object at rest stays at rest

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NGSS.MS-PS2-1

In the example of a rocket launching into space, which direction does the rocket's force act?

• Downwards

• Upwards

• Sideways

• Backwards

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NGSS.MS-PS2-2

When Joan jumps into the air, which part of her body sends the force or momentum down?

• Her feet

• Her hands

• Her head

• Her torso

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NGSS.MS-PS2-2

What happens if Joan uses less force when jumping?

• Her jump won't be as high

• Her jump will be higher

• Her jump won't be affected

• Her jump will be faster

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NGSS.MS-PS2-2

What does Newton's third law of motion state about the reaction to an action?

• The reaction is equal in force and opposite in direction

• The reaction is greater in force and opposite in direction

• The reaction is smaller in force and opposite in direction

• The reaction is equal in force and same in direction

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NGSS.MS-PS2-1

What is the purpose of a rocket's engine in relation to Newton's third law of motion?

• To expel gas downwards and create an upward reaction force

• To expel gas upwards and create a downward reaction force

• To expel gas sideways and create a sideways reaction force

• To expel gas backwards and create a forward reaction force

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NGSS.MS-PS2-1

What is the result of the ground's reaction when a rocket is launched?

• The ground pushes the rocket upwards

• The ground pulls the rocket downwards

• The ground pushes the rocket sideways

• The ground pulls the rocket backwards

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NGSS.MS-PS2-1

What is the result of the ground's reaction when Joan jumps into the air?

• The ground pushes Joan upwards

• The ground pulls Joan downwards

• The ground pushes Joan sideways

• The ground pulls Joan backwards

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NGSS.MS-PS2-1

What happens if Joan uses more force when jumping?

• Her jump will be higher

• Her jump won't be affected

• Her jump won't be as high

• Her jump will be faster

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NGSS.MS-PS2-2

What happens if you push the water with more effort in a swimming pool?

• You will propel faster and further

• You will sink

• You won't move at all

• You will travel slower

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NGSS.MS-PS3-5