Newton's Third Law of Motion

If you push on a wall with a force of 30 N, the force acting on you from the wall is which of the following?

• 0 N

• 10 N

• 20 N

• 30 N

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NGSS.MS-PS2-1

Based on Newton's third law of motion, when a person on a skateboard throws a heavy concrete block to the north, the person will be pushed to the ___________.

• north

• south

• east

• west

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When a car collides (action) into a fire hydrant, they both move (reaction). Is this considered a force pair?

• Yes

• No

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When the mass of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.

• doubles

• quadruples

• decreases

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Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.
• A 0.15 kg object rolling at 2 m/s.
• A 0.15 kg object rolling at 1 m/s
• A 0.4 kg object rolling at 2 m/s.

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A dog plays with a ball. Consider the action force the dog touching the ball. What is the reaction force?

• The friction of the ground on the ball.

• The ball pushing the ground.

• The ground pulling the dog.

• The ball touching the dog.

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NGSS.MS-PS2-1

What happens when two objects, such as a baseball and a bat, collide?

• They hit each other with the same force in the same direction.

• They hit each other with the same force in opposite directions.

• They hit each other with unequal force in opposite directions.

• One remains still while the other one moves in the same direction.

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A skater pushes another skater forward, but the one pushing moves backwards.

• Newton's

  1st

  Law of Motion

• Newton's

  2nd

  Law of Motion

• Newton's

  3rd

  Law of Motion

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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

A book pushes down on a table with a force of 5N, the table..

• Pushes back with a force of 5N

• Pushes back with a force less than 5N

• Pushes back with a forcec greater than 5N

• Does nothing. A table has no force.

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