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?

Answer explanation

Because the more friction the more heat to produce.

Give example of friction that is not helpful and why?

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.

Answer explanation

Because sand paper is a rough materials.

What are the 4 kinds of friction?

Answer explanation

Sliding, rolling, static and fluid.