Physics Quiz on Newton's Laws

Which is true about an object in free fall?

• It pulls on Earth, and Earth pulls on it.

• It has no inertia.

• Its acceleration depends on its mass.

• Its momentum is constant.

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Which term describes the tendency of an object to resist a change in motion?

• balanced force

• inertia

• net force

• acceleration

An object always accelerates in the same direction as which of the following?

• air resistance

• static friction

• gravity

• net force

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Which of Newton's laws states that an object moves a constant velocity unless an unbalanced force acts on it?

• first

• second

• third

• fourth

Which statement is NOT true?

• When you throw a ball harder, you exert a greater force on the ball.

• The acceleration of an object depends on its mass.

• The acceleration of an object depends only on the force exerted on it.

• Force has a size and a direction.

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Who was Isaac Newton?

• a scientist

• a trapeze artist

• a president

How many laws of motion did Newton state?

• 2

• 7

• 3

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What does Newton's First Law say?

• an object in motion will stay in motion.

• an object at rest will stay at rest.

• both A and B.

When you're riding a car:

• You're not moving at all.

• You're moving at the same speed as the car.

• You're moving at one half the speed of the car.

Why does a ball roll across a rug and slow to a stop?

• because its scared

• because friction resists the ball's forward motion

• because what goes up must come down

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