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Determine What The Drag Force On The Runner During The Race

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Sandra Watson
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Solve the all parts of given problem:

Problem: 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 I: 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 II: What is this force as a fraction of the runner’s weight?

I want help to find this force as a fraction of the runner’s weight.

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