Friction

Friction when you leave marks on paper.

• Sliding

• Static

• Rolling

• None of the above

How does friction affect speed?

Force that acts in the opposite direction

• Force

• Static

• Kinetic

• Friction

What does friction produce? Why?

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Answer explanation

Because the more friction the more heat to produce.

Give example of friction that is not helpful and why?

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Answer explanation

Fire may result of more friction.

Friction is a force that acts in a _ direction.

Answer explanation

Because this is where friction produce.

Which is the example of friction that is helpful?

• Brake of a bike

• Tires from a car

• Tread of your shoes

• All of the above

The rough the surface...

What kind of materials has the MOST amount of friction? Explain why.

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Answer explanation

Because sand paper is a rough materials.

What are the 4 kinds of friction?

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Answer explanation

Sliding, rolling, static and fluid.