Question: 6 2 kg sprinter accelerates from rest to the speed of 1 1 m / s and 4 . 7 seconds calculate the mechanical work

62

kg sprinter accelerates from rest to the speed of

11

/

s and

4.7

seconds calculate the mechanical work done by the sprinter during this time calculate the average power the sprinter must generate if the sprinter converts energy to mechanical energy with the efficiency of

25 %

at what average rate is he burn calories

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