Newton's laws of motion and Momentum

An object at rest will _______ if no outside forces are applied.

• Stay at rest

• Decrease Mass

• Increase Velocity

• Slow down

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Momentum is related to Newton's first law.

• True

• False

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A greater applied force is required to move an object with a greater mass than one with a smaller mass.

• True

• False

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The SI units for force are...

• Kilograms

• Meters per second

• Newtons

• Pounds

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If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?

• the cannonball

• The balls land at the same time.

• the baseball

• the ball with the larger volume

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If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the reaction force is

• exerted on the table

• not present

• exerted on all the other billiard balls.

• exerted by the billiard ball on the cue ball.

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A crumpled piece of paper hits the ground before a flat sheet of paper because

• the acceleration of gravity is greater on the crumpled paper.

• the crumpled paper is more massive

• the crumpled paper is less massive.

• there is more air resistance against the flat paper.

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According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.

• change its momentum.

• eventually come to a stop.

• accelerate.

An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. This is an example best described by

• Newton’s first law of motion for objects at rest.

• Newton’s second law of motion.

• Newton’s first law of motion for objects in motion.

• Newton’s third law of motion.

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A sled sliding on a flat, icy surface with a constant velocity is best described by

• Newton’s first law of motion for objects at rest.

• Newton’s second law of motion.

• Newton’s third law of motion.

• Newton’s first law of motion for objects in motion.