HELP!!! PlEaSe Okay, here is my problem: In a wild shot, Bo knocks a pool ball of mass of .85 kilograms offa 95-cm high pool table, and the ball hits the floor with a speed of 6.0 m/s. How fast was the ball moving when it left the pool table? I don't want to know the answer, I just want to know how to solve the problem, but I have no clue where to start. If someone could just help me get the problem started, or in the right direction, I would really appreciate it. Thanks!