Newton's Laws of Motion

Newton's Third Law States...

• Objects in motion stay in motion and objects at rest stay at rest
• Force is equal to mass times acceleration
• For each action there is an equal and opposite reaction

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An archer shoots an arrow. The action force is the bowstring against the arrow, the reaction force is...

• Air resistance against the bow
• the arrow's push against the bowstring
• the grip of the archer's hand on the bow

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What is the reaction force to a foot pushing down on the floor?

• The foot going through the floor
• The floor pushing back against the foot
• The floor breaking to the foot

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According to Newton's Third law the strength or magnitude of forces will be...

• smaller
• equal
• larger

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A swimmer pushes on the water and the water pushes on the hand and the swimmer moves forward. What is the ACTION force?

• Swimmer pushes on the water

• the water pushes on the hand and the swimmer moves forward

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A bowling ball hits the pins and the pins fall over. What is the ACTION force?

• Bowling ball hitting pins

• Pins falling over

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If you apply MORE force to the ground what happens to the ground pushing on you?

• The force remains the same

• The force increases

• The force decreases

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Katniss Everdeen applies 20 N of force back on her bow. What happens to the arrow when she lets go?

• The arrow goes backwards

• The arrow goes forwards with 20 N

• The arrow goes forwards with 30 N

• The arrow goes forwards with 0 N

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Which law explains how rockets are launched into space?

• Newton's First Law of Motion
• Newton's Second Law of Motion
• Newton's Third Law of Motion
• Newton's Fourth Law of Motion

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By pushing backwards a roller skater moves forward. This is an example of Newton's

• First Law

• Second Law

• Third Law

• Law of Gravity

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