Newton's Laws Practice

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

Isaac Newton stated for every action there is an

_________ and _________ reaction.

• equal and same

• equal and opposite

• unequal and same

• unequal and opposite

What determines an object’s mass?

• amount of matter

• amount of friction

• amount of force

• amount of gravity

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.

What does friction do to a moving object?

• Makes it rise

• Slows it down

• Speeds it up

• All of the above

The rate at which an object’s velocity changes is called what?

• inertia

• actualization

• acceleration

• completion

Your neighbor is riding her bike around the block. When she slows down and turns a corner, what changes about her?

• velocity

• friction

• speed only

• balance

Every time your cat’s paw hits her toy string, it swings away from her. How does this demonstrate Newton’s third law of motion?

• Objects with mass, such as your cat's paw and toy string, will require inertia.

• Objects in action, such as the string toy, will experience force.

• For every motion from your cat's paw, there is unbalanced inertia from the string.

• For every action your cat makes, there is an equal and opposite reaction from the string.