Newton's Laws Review

What does Newton’s first law say about objects in motion?

• Objects in motion speed will increase.

• Objects in motion speed will decrease.

• Objects will move at the same speed and direction unless force changes their motion.

• Force does not affect the change in an objects motion.

What does Newton’s first law say about objects at rest?

• They cannot move unless they have a lot of friction.

• If they are heavy, they will stay at rest, but if they are light, they will move.

• They will stay at rest unless an outside force makes them move.

• They have more inertia than objects in motion.

Force = Mass x Acceleration

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

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For every action, there is an

_________ and _________ reaction.

• equal and same

• equal and opposite

• unequal and same

• unequal and opposite

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What determines an object’s mass?

• amount of matter

• amount of friction

• amount of force

• amount of gravity

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What is inertia?

• Only how things move

• Only how things do not move

• How things move and don't move

• All of the above

While ice-skating, you push off and slide forward. Based on Newton’s first law of motion, what is true?

• You will lose your balance and fall over before you reach the middle of the ice rink.

• You will continue to slide across the ice until a force makes you stop or change direction.

• The force of gravity will make you keep your velocity until your friends make you stop.

• The size of your ice skates will determine how quickly or slowly you travel across the ice.

What needs to happen to the soccer ball for it to return to your friend?

• Friction has to be applied to the ball.

• Force has to be applied to the ball.

• Speed has to be applied to the ball.

• Inertia has to be applied to the ball.

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What does friction do to a moving object?

• Makes it rise

• Slows it down

• Speeds it up

• All of the above

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How is velocity different from speed?

• Velocity is when an object goes in reverse.

• Velocity is the direction an object moves in, and it has nothing to do with speed.

• Velocity is speed and direction together.

• Velocity is not at all different from speed.