1. The problem statement, all variables and given/known data Derive an expression for calculating the theoretical range of the ball in terms of y, g, theta, and v0. 2. Relevant equations 3. The attempt at a solution I've tried just about everything to figure this out. I started with the motion in the x-direction, and plugged the second-to-last equation in for v0x in the second equation, and then solved for "t". Then I plugged the "t" into the second equation (but for the y-direction), and tried solving for "x". But I kept getting really weird numbers. Can someone please help me out?