I recently uploaded a tutorial about how to key frame a ball bouncing. This tutorial uses Carrara 5's Graph Editor to make the effect of gravity on the ball. It also uses two morph targets (which are pre-setup on the starter scene file) to deform the ball on impact and to stretch it prior to hitting the ground, which is also influenced by custom edits to the morph targets via the Graph Editor.
http://www.awbenson.com/tutorials/Ca...all-bounce.htm
Andrew
AKA: AWBenson
www.awbenson.com