Question

Indicate whether the statement is true or false. Friction refers to the force between two surfaces that are sliding past each other.
A. True
B. False

Answer 1

I'll post some info here that will get you on the right track.

"Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction..."
- http://en.wikipedia.org/wiki/Friction

Friction force is what keeps your shoes from slipping on the sidewalk. (There is less friction between your shoe an ice, so the shoe and ice slide on each other with a smaller resistive force.)

Also, sliding doesn't imply no friction! I'm not sure if that's what was confusing you or not. Otherwise, we wouldn't be able to use the word sliding for things like "my pen is sliding off of my desk," where friction is definitely involved.

Any thoughts?