Newton's 3 Laws & Forces

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

• The cannon moving forward

• The cannonball moving forward

• The cannon moving backward

• The cannonball moving backward

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NGSS.MS-PS2-1

What is the unit called that measures force?

• Isaac

• Yee

• Newton

• kilogram

Answer explanation

It's named after Sir Isaac Newton the scientist

Tags

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NGSS.MS-PS2-2

What is force?

• A push

• A pull

• Jumping

• Either a push or pull

Answer explanation

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NGSS.MS-PS2-2

When an object resists change, like a body in a turning car, it is called ________________.

• inertia

• force

• friction

• drag force

Answer explanation

your body wants to go strait and slides against the turn

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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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Speed in a direction is called

• Momentum
• Velocity
• Speed
• Inertia

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions
• Because they are elephants
• Because they are pulling away from each other.

Tags

NGSS.MS-PS2-1

A sports car speeds up much faster than a dump truck when a traffic light turns from red to green. Which law is this?

• Law 1

• Law 2

• Law 3

Answer explanation

the math problem that makes the engine power work for the truck or car it's in- you want enough power for it to go!

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A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

• Law 1

• Law 2

• Law 3

Answer explanation

equal and opposite

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When a truck stops suddenly, the packages on its truck bed continue to move forward. Which law is this?

• Law 1

• Law 2

• Law 3

Answer explanation

those packages want to stay at the highway speed they were traveling at before braking