3.2 Pre-Assessment

Front

What is friction?

Back

A force that opposes motion.

Front

What is a force?

Back

Any push or pull that causes an object to speed up, slow down, or change direction.

Front

Which takes more force to move?

Back

A 25 pound box.

Front

What is the effect of friction on the motion of objects?

Back

It slows them down.

Front

Which surface has MORE friction?

Back

A basketball court.

Front

What is kinetic friction?

Back

The friction that occurs when two objects are in motion relative to each other.

Front

What is static friction?

Back

The friction that prevents two objects from starting to move relative to each other.

Front

How does surface texture affect friction?

Back

Rough surfaces generally have more friction than smooth surfaces.

Front

What is the relationship between mass and friction?

Back

More mass typically results in more friction.

Front

What is gravitational force?

Back

The force that attracts two bodies towards each other, commonly experienced as weight.