Lance Armstrong is accelerating up one of the hills on his bike in The Tour de France. The
combined mass is 80.0 kg. The hill is 650 m long and the total elevation change of the
hill is 25 m. His speed at the bottom of the hill is 2.0 m/s. Lance reaches the top of the
hill in 150 seconds and is traveling at 7.5 m/s. If force of friction on the bike
wheels is 35 N, find the average human power
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