1. The problem statement, all variables and given/known data Here is the set-up: -there is a lab bench that is a certain height above the floor, "H" -on the bench is a ramp that is a certain height above the bench top, "h" -a ball is dropped on the ramp and then is "launched" in the air and eventually falls to bounch on the ground. How can I calculate the distance from the bench where the ball bounces first? I have "h" and "H". 2. Relevant equations To calculate the speed of the ball I did: Eg=Ek mgh=(1/2)mv^2 I'm unsure how to proceed from here to find the distance. I don't have the mass of the ball, the acceleration or any angle for the ramp. Other possible equations I could use are: W = ∆ K Ek W = F d cos θ 3. The attempt at a solution I know I have to take into account that there are 2 forces acting on the ball. The first is the horizontal force propelling the ball forward and the force of gravity pulling on the ball. I was thinking of finding Ek and Eg again and add them together for Et to use in the work formula. But I don't have the mass of the ball. I'm just unsure what to do from here.