Newton's 3rd Law

Newton’s law states that for every action, there is an ________ reaction.

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

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NGSS.MS-PS2-1

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

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NGSS.MS-PS2-1

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

• The cannon moving forward

• The cannon moving backwards

• The cannonball moving backwards

• The cannonball moving forward

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NGSS.MS-PS2-1

How is this an example of Newton’s Third law?

• Only the ball is using the head

• They are both exerting an equal force on each other

• Only the head is pushing the ball

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NGSS.MS-PS2-1

When a heavy football player and a light one run into each other, who exerts more force

• The light one

• Their force are equal

• The heavy one

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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

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

• 100 Newtons, same direction

• 100 Newtons, opposite direction

• 200 Newtons, opposite direction

• 200 Newtons, same direction

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NGSS.MS-PS2-1

A bus hits a bug and the bug splatters on the windshield, which force is greater?

• The Bus
• The Bug
• They're the same
• Gravity acting on the bus

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NGSS.MS-PS2-1

Which object has no acceleration?

• A stapler on a table.

• A car moving at a constant speed in one direction.

• A satellite orbiting Earth.

• A bike turning a corner.

Two people are skateboarding. If person 1 has a larger mass than person 2 and person 1 pushes person 2, how much would this affect their movement?

• Mass will have no affect.

• They will accelerate backwards the same.

• Person 1 will accelerate more, but both will move.

• They will both accelerate back, but person 2 will move more.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2