Friction

Front

Friction is a force that acts in an ___________ direction of movement.

Back

opposite

Front

The amount of friction depends on the weight of the objects pressing together.

Back

True

Front

How can friction be reduced?

Back

All of the above are ways of reducing friction: reduce the force acting between the 2 surfaces, reduce the roughness of the 2 surfaces coming in contact, use wax, grease or oil.

Front

Rougher surfaces have ...

Back

greater friction

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

The rougher the surface, the faster an object will travel over the surface.

Back

False

Front

When most objects with smooth surfaces rub, there is less friction.

Back

True

Front

Force that opposes motion between 2 surfaces

Back

friction

Front

Do smooth surfaces such as ice usually produce less friction?

Back

true

Front

People use rough or sticky things to decrease friction.

Back

false