Forces and Friction Review

Movers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?

• friction
• gravity
• inertia
• magnetism

A man is pushing a ball up a hill. If the man stops pushing the ball and steps out of the way, what will most likely happen to the ball?

• It will stop on the hill.
• It will roll down the hill.
• It will roll to the side toward the man.
• It will fly.

a push or a pull

• force
• contact force
• noncontact force
• friction

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Mass is measured in ___________.

• Kilograms
• newtons
• joules
• mililiters

Amount of matter in an object

• weight
• force
• mass
• colume

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This pull keeps the Earth moving around the sun.

• magnetism
• gravity
• friction
• poles

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The force that opposes, or slows down, motion between two surfaces that are touching.

• gravity
• friction
• magnetism
• poles

What does friction produce?

• light
• sound
• heat
• gravity

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 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Which best describes the role friction plays in the operation of a car?

• Friction makes a car go faster.
• Friction keeps a car from stopping.
• Friction turns the car in a new direction.
• Friction helps a car slow down and stop.