A(n) 82-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.1 s. (a) Calculate the mechanical work done by the sprinter during this time.  J (b) Calculate the average power the sprinter must generate.  W (c) If the sprinter converts food energy to mechanical energy with an efficiency of 25%, at what average rate is he burning Calories?  Cal/s (d) What happens to the other 75% of the food energy being used

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Chapter3: The First Law Of Thermodynamics
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A(n) 82-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.1 s.

(a) Calculate the mechanical work done by the sprinter during this time.
 J

(b) Calculate the average power the sprinter must generate.
 W

(c) If the sprinter converts food energy to mechanical energy with an efficiency of 25%, at what average rate is he burning Calories?
 Cal/s

(d) What happens to the other 75% of the food energy being used
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