1. The problem statement, all variables and given/known data Gus is at end of rope. He needs to reach roof. His friend fires cannon ball horizontally hitting Gus and get stuck in belt. Find minimum speed of cannon ball for Gus to reach roof. 50m is rope. 99kg is Gus. 1kg is ball. 45° angle in diagram 2. Relevant equations conservation of energy Et1 = Et2 1/2mv^2 = mgh momentum p = mv 3. The attempt at a solution 1/2(1)v^2 = 99(9.8)(50xsin45°) 1/2v^2 = 34301.75 v = 260 m/s is this right?