Third Law

You stand on the ground holding a snowball in the palm of your hand. Which below identifies a third law pair of forces in this situation? (choose more than one)

• The snowball pushes down on your hand and your hand pushes up on the snowball.

• The earth pulls the snowball down, and your hand pushes up to oppose gravity.

• The earth pulls you down, and the ground pushes you back up to oppose gravity.

• You push down on the ground while standing on it, and the ground pushes back up on you.

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

• 100 Newtons, same direction

• 100 Newtons, opposite direction

• 200 Newtons, opposite direction

• 200 Newtons, same direction

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How is this an example of Newton’s Third law?

• Only the ball is using the head

• They are both exerting an equal force on each other

• Only the head is pushing the ball

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When a heavy football player and a light one run into each other, who exerts more force

• The light one

• Their force are equal

• The heavy one

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A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

• 100 Newtons, same direction

• 100 Newtons, opposite direction

• 200 Newtons, opposite direction

• 200 Newtons, same direction

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NGSS.MS-PS2-1

Two people are skateboarding. If person 1 has a larger mass than person 2 and person 1 pushes person 2, how much would this affect their movement?

• Mass will have no affect.

• They will accelerate backwards the same.

• Person 1 will accelerate more, but both will move.

• They will both accelerate back, but person 2 will move more.

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The nozzle of a rocket is pointed downward so that as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?

• The rocket is protected from the heat of the exhaust.

• Burned fuel can be collected on the ground.

• As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward.

• This allows the rocket to be steered properly.

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This is always equal and opposite to the action force

• Motion

• Collide

• Force

• Newton's 3rd Law

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This image illustrates Newton's third law. Newton's third law simply states that for every action there is an ______ and opposite reaction.

• opposite

• greater

• equal

• weaker

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This image illustrates Newton's third law. Newton's third law simply states that for every action there is an equal and ______ reaction.

• opposite

• greater

• equal

• weaker

Tags

NGSS.MS-PS2-1