Solve the all parts of following problem:
Problem: You push a 69kg box across a floor where the coefficient of kinetic friction is µk = 0.55. The force you exert is horizontal.
Part A: How much power is needed to push the box at a speed of 0.60m/s?
Part B: How much work do you do if you push the box for 38s?
Show your work to receive full credit for this problem.