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# Problem: For a physics lab experiment, four classmates run up the stairs from the basement to the top floor of their physics building - a vertical distance of 16.0 m . The classmates and their masses are: Tatiana, 50.2 kg; Bill, 68.2 kg; Ricardo, 81.8 kg; and Melanie, 59.1 kg. The time it takes each of them is shown in .Considering only the work done against gravity, which person had the largest average power output?Considering only the work done against gravity, which person had the smallest average power output?Chang is very fit and has mass 64.7 kg . If his average power output is 1.00 hp, how many seconds does it take him to run up the stairs?

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###### Problem Details

For a physics lab experiment, four classmates run up the stairs from the basement to the top floor of their physics building - a vertical distance of 16.0 m . The classmates and their masses are: Tatiana, 50.2 kg; Bill, 68.2 kg; Ricardo, 81.8 kg; and Melanie, 59.1 kg. The time it takes each of them is shown in .

Considering only the work done against gravity, which person had the largest average power output?

Considering only the work done against gravity, which person had the smallest average power output?

Chang is very fit and has mass 64.7 kg . If his average power output is 1.00 hp, how many seconds does it take him to run up the stairs?