Amplify Force and Motion

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 and opposite reaction.

• Every mass exerts a force on every other mass.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

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a push or a pull that can change the motion of an object

• friction

• infer

• force

• mass

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the energy that an object has because it is moving

• moving energy

• kinetic energy

• potential energy

• friction

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What is NOT a way that an object can accelerate?

• decreasing speed

• change in direction

• friction

• increase in speed

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• A

• B

• C

• D

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The more massive an object, the (a)   affect a certain force will have on the object.

• less

• more

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The FIRST part of Newton's 1st law states:

• An object at rest will stay at rest

• An object in motion will stay in motion

• An object at rest will stay in motion

• An object in motion will stay at rest

This is describing the law of

• forces

• inertia

• velocity

• gravity

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An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations

• Newton's first law

• Newton's second law

• Newton's third law

• Conservation of momentum

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NGSS.MS-PS2-2

True or False: objects with greater mass require more force to accelerate when compared to objects with less mass.

• True

• False

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