I have started this billiards, and am very confused by one thing. The ball has a mass of M, radius R, and mement of inertia about center of mass I=2/5MR2 . The ball is struck in the center and slides with a initial velocity. Here is what I am having trouble with, if you could give me a hint to help me get started, I would appriciate it. --As the ball moves across th rough billiards table it has a coefficient of sliding friction, its motion gradually changes from pure translation through rolling with slipping to rolling without slipping. I have to determine a v and an angular velocity for rolling with slipping, and a time when it stops slipping. If you could get me started I would appriciate it.