Exploring Newton's Laws of Motion

Which of the following best describes Newton's First Law of Motion?

• 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 unless acted upon by an unbalanced force.

• Force equals mass times acceleration.

• Energy cannot be created or destroyed.

What is the formula for Newton's Second Law of Motion?

Newton's Third Law of Motion states:

• Objects in motion stay in motion.

• Force equals mass times acceleration.

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

• Energy is conserved.

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

• A ball rolling on the ground eventually stops because of friction.

• A rocket launching into space.

• A swimmer pushing water backwards to move forward.

• A car accelerating when the gas pedal is pressed.

Which of the following best illustrates Newton's Third Law?

• A book resting on a table.

• A person jumping off a boat and the boat moving backward.

• A car slowing down due to friction.

• A ball rolling down a hill.

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A soccer ball remains at rest on the field until it is kicked. Which law does this demonstrate?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Conservation of Energy

Which of the following is NOT an application of Newton's Laws?

• Explaining why a rocket launches.

• Understanding why a car stops when brakes are applied.

• Describing how plants make food.

• Predicting the motion of a thrown ball.

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What is inertia?

• The tendency of an object to change its motion.

• The tendency of an object to resist a change in its motion.

• The force that causes acceleration.

• The energy stored in an object.

If you are riding a skateboard and suddenly hit a curb, why do you fly forward?

• Because of Newton's First Law; your body wants to keep moving forward.

• Because of Newton's Second Law; force equals mass times acceleration.

• Because of Newton's Third Law; for every action, there is an equal and opposite reaction.

• Because of gravity pulling you forward.

Which scenario best demonstrates Newton's Second Law?

• A ball at rest stays at rest.

• A heavier object requires more force to accelerate than a lighter object.

• A rocket launches due to the expulsion of gases.

• A person sitting still in a chair.