ft CED A 75-kg sprinter accelerates from rest to a speed
Chapter 11, Problem 11.49(choose chapter or problem)
ft CED A 75-kg sprinter accelerates from rest to a speed of 11.0 m/s in 5.0 s. (a) Calculate the mechanical work done by the sprinter during this time, (b) Calculate the average power the sprinter must generate, (c) If the sprinter converts food energy to mechanical energy- with an efficiency of 25%, at what average rate is he burning Calories? (d) What happens to the other 75% of the food energy being used?
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