What happens to the frequency and pitch of sound if the object making the sound moves away from you ?

If you and the source of sound are moving apart, then the pitch (frequency) you hear is lower than the pitch (frequency) that's actually leaving the source.  

It doesn't matter whether you or the source is the one moving, only that the distance between you is increasing.

Friction decreased when he went from pavement to ice and then increased two more times.