Newton's Laws of Motion Quiz

What does Newton's First Law of Motion state?

• An object in motion will change its velocity if a force acts upon it.

• For every action, there is an equal and opposite reaction.

• An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• The force acting on an object is equal to the mass of that object times its acceleration.

Which of the following best describes inertia?

• The tendency of an object to resist changes in its velocity.

• The rate of change of momentum of an object.

• The quantity of motion of a moving body, measured as a product of its mass and velocity.

• The gravitational pull on an object.

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Newton's Second Law of Motion can be mathematically expressed as:

• Both A and B

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According to Newton's Third Law of Motion, if you push on a wall, the wall pushes back on you with:

• Less force.

• More force.

• The same amount of force.

• No force at all.

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What unit is used to measure force?

• Joule

• Newton

• Pascal

• Watt

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Which of the following scenarios is an example of Newton's First Law of Motion?

• A ball rolling down a hill speeds up.

• A car comes to a stop gradually when the brakes are applied.

• A book lying on a table remains at rest until someone moves it.

• A rocket launches off its pad when engines are fired.

If the mass of an object is doubled while the force applied to it remains constant, what happens to its acceleration?

• It doubles.

• It remains the same.

• It is halved.

• It quadruples.

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Which law explains why it is harder to stop a heavy truck than a small car moving at the same speed?

• First Law of Motion

• Second Law of Motion

• Third Law of Motion

• Law of Universal Gravitation

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What does the term "unbalanced force" mean?

• Forces that result in a net force of zero.

• Forces that are equal in magnitude but opposite in direction.

• Forces that cause a change in the motion of an object.

• Forces that do not exist.

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If you were in space and pushed a ball away from you, what would happen to the ball and you?

• Only the ball would move.

• Only you would move in the opposite direction.

• Both you and the ball would move in opposite directions.

• Neither you nor the ball would move.

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