Newton's Third Law of Motion

A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction force is...

• The grip of the player's hands on the ball
• the air resistance of the ball
• the force of the ball against the bat

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NGSS.MS-PS2-1

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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NGSS.MS-PS2-1

How does Newton’s third law explain how a rocket takes off?

• The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same. 
• The rocket is at rest until ignition.
• The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar
• Equal and opposite
• Equal and different
• Greater and opposite

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NGSS.MS-PS2-1

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

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NGSS.MS-PS2-1

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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NGSS.MS-PS2-1

A student throws a ball against a wall.  Which statement best explains what is happening in the picture.

• The energy of the ball is destroyed as it strikes the wall.
• The energy of the ball becomes negative as it hits the wall.
• The force from the wall on the ball is equal and opposite to the force from the ball on the wall.
• The force exerted by the ball on the wall is greater than the force exerted by the wall on the ball.

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NGSS.MS-PS2-1

What are the two forces in a force pair?

• the action force and the reaction force

• the reaction force and the elastic force

• the Jedi force and the reaction force

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NGSS.MS-PS2-1

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

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NGSS.MS-PS2-1

Force always come in________

• waves

• triplets

• pairs

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NGSS.MS-PS2-1