1. The problem statement, all variables and given/known data So I made a spring launcher that will fire marbles. I need to derive a general formula for finding range for any given angle and x value. 2. Relevant equations 1) v22=v12+2ad 2) Ek=Es 3) 1/2mv2=1/2kx2 4) d=v*t This projectile was shot from 1.1m off of the ground. 3. The attempt at a solution I have no idea where to start.