Motion and Forces

If you push on a wall of a building, what will happen?

• The wall pushes back with a force equal in size and opposite in direction.

• The wall is larger so there is no force exerted.

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NGSS.MS-PS2-1

The wall pushes back with a force equal in size and opposite in direction.

• They are unequal and in the same direction.

• They are equal and in the opposite direction.

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NGSS.MS-PS2-1

What are the interacting force pairs of Newton’s Third Law called?

• acceleration and mass forces

• gravity and magnetic forces

• action and reaction forces

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NGSS.MS-PS2-1

To swim forward in water, your arms push against the water with a force. What does the water do?

• The water pushes against your arms with a greater force so that you move forward.

• The water pushes against your arms with an equal and opposite force.

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NGSS.MS-PS2-1

When a bird flaps its wings, which direction does the air push against the bird’s wings?

• UP

• Down

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NGSS.MS-PS2-1

When a bird flaps its wings, which direction do the bird’s wings push the air?

• UP

• Down

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NGSS.MS-PS2-1

Action is to Reaction as Equal is to Opposite.

• One force is always bigger than another.

• Forces always come in pairs.

• Forces always produce movement.

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NGSS.MS-PS2-1

Which of the following statements is Newton’s Third Law?

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

• An object at rest will remain at rest unless acted on by an unbalanced force.

• The greater the mass, the greater the amount of force needed.

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NGSS.MS-PS2-1

What is true about Newton's 1st law

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

• Objects will stay at rest unless acted upon by an outside source.

• The greater the mass, the greater the amount of force needed.

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NGSS.MS-PS2-1

What is a force?

• A push or a pull acting on an object.

• The energy of an object.

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NGSS.MS-PS2-2

NGSS.MS-PS2-5