Newton's Three Laws Review

A person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?

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

• Every mass exerts a force on every other mass.

• An object at rest will tend to stay at rest.

• Friction opposes the motion of an object.

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Niko was pushed forward into his seatbelt when the car suddenly stops. What law of motion explains this?

• Sliding friction

• Law of Interaction

• Law of Acceleration

• Law of Inertia

Body at rest: law of inertia ; Pushing a chair: ______________

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Acceleration and force: direct proportion

Acceleration and mass: _________

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Which of Newton's Three Laws does the following statement satisfy? Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

• Newton's First Law

• Newton's Third Law

• Newton's Second Law

• Frictional Force

A force is a push or a pull on an object that results from its interaction with another object.

• True

• False

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If there is a big mass, it would need a stronger force to accelerate it. Which law does this describe?

• Law of Inertia

• Law of Interaction

• Law of Acceleration

• Frictional Force

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How will this object move?

• It won't move.

• It will move to the right.

• It will move to the left.

• It will move in both directions.

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You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

• 60 N right

• 60 n right

• 10 N left

• 50 N left

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A table cloth can be withdrawn from under a set of dishes without dislodging them. Which of the following BEST explains the phenomenon displayed by the dishes?

• Mass

• Weight

• Inertia

• Action-Reaction