Asked by Anonymous

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 19 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?
Answered by ann
11.2
Answered by Jen
A: 4.16 N
B: 4.16/588
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