Compute the each part of given problem:
Problem: A 65.0 kg skier on level snow coasts 153m to a stop from a speed of 1.20 m/s.
Part I: Use the work-energy principle to find the coefficient of kinetic friction between the skis and the snow.
Part II: Suppose a 70.0kg skier with twice the starting speed coasted the same distance before stopping. Find the coefficient of kinetic friction between that skier's skis and the snow.
Show all work, use additional paper if necessary.