Question

when you ride a bicycle at a constant speed nearly ass the energy you expend into the work you do against the drag force of the air. Model a cyclist as having cross-section area .46 m^2 and a drag coeeficient of .9. The food calorie is equal to 4190 J. how many calories does the cyxlist burn if he rides over the level ground at 7.3 m/s for 1.9 h?

Answer 1

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