Forces and Newton's Laws

What is Newton's 3rd Law?

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

• Acceleration depends on two variables, the mass of the object and the amount of force.

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NGSS.MS-PS2-1

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.HS-PS2-1

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.HS-PS2-1

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.HS-PS2-1

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

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NGSS.HS-PS2-2

What is the unit for momentum?

• m/s

• kg

• N

• kg* m/s

• J

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NGSS.HS-PS2-2

What object will have more momentum a 1000 kg truck moving 7 m/s or a 500 kg car moving 10 m/s

• Truck

• Car

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NGSS.HS-PS2-2

What force slows objects down and keeps them from moving?

• Acceleration

• Gravity

• Friction

• Net Force

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

• 2nd law

• 1st law

• 3rd law