1. The problem statement, all variables and given/known data What is the power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s? m = 60kg d = 4m t = 4.2 2. Relevant equations P = W / t W = Fdcos(Θ) F = ma 3. The attempt at a solution Combining the equations above I did (m) (a) (d) / (t) which is (60 * 9.81 * 4) / (4.2) and got an end result of 560 W and I was wondering if this was correct.