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3 pt There are 149 steps between the ground floor and the sixth floor in a building. Each step is 17.1 cm tall. It

3 pt There are 149 steps between the ground floor and the sixth floor in a building. Each step is 17.1 cm tall. It takes 2 minutes and 33 seconds for a person with a mass of 68.8 kg to walk all the way up. How much work did the person do? (in J) 3 pt What was the average power performed by the person during the walk? (in W)

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