1. The problem statement, all variables and given/known data A mass of 8.50 kg is travelling 7.50 m/s [up]. It is acted on by a force of 340 N [up] over a displacement of 15.0 m [up]. What is the change in kinetic energy 2. Relevant equations Ek = 1/2mvsquared. F = mv. w = fd 3. The attempt at a solution I tried doing the equation Ek = 1/2mvsquared, and was off by 3000 or so.