Newton's Laws

What does the first part of 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 the second part of 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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Isaac Newton stated 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 you’re ice-skating with your friends, you push off from one end of the rink and slide forward. Based on Newton’s first law of motion, what is true?

• You will lose your balance and fall over before your 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.

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Your friend kicks a soccer ball, and it stops a few feet from you. What needs to happen to it in order 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.