What explains why objects resist changes in their state of motion?

• gravity

• inertia

• force

• friction

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

• Friction

• Gravity

• Inertia

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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NGSS.MS-PS2-1

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

The combination of all the forces acting on an object is the...

• net force
• action force
• reaction force
• balance force

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1
• Cart 2
• Cart 3 
• Cart 4

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NGSS.MS-PS2-2

If a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?

• 15 m/s^2
• 5 m/s^2
• .5 m/s^2
• 10 m/s^2

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NGSS.MS-PS2-2

An inflated balloon released from rest moves horizontally.

The law that best explains this event is

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Law of Gravity

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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NGSS.MS-PS2-2

A force is:

• a push

• a pull

• both

• neither

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NGSS.MS-PS2-1