Solve the all parts of given question:
Question: Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 17 minutes.
Part A: Determine the drag force on the runner during the race. Suppose that the cross section area of the runner is 0.72 m2 and the density of air is 1.2 kg/m3.
Part B: What is this force as a fraction of the runner's weight? (D/w)
Could someone please show me the work and explain how to get the answer.