Question

• John weighs 154 lb. He felt guilty about the 550 Cal crème Brulee that he had after lunch. He decided to walk up the stairs from the basement cafeteria to his office (45 ft high) to try and burn some off. The human body is only 25% efficient in converting food energy into mechanical energy. How many food calories did he burn? If he took 2 minutes to get to the top of the stairs, what was his average power usage in watts?

Answer 1

RURNED CALOES 9399 . o 13.5イ15 7 1 00 23L17.25 니 .184 19.5( 7/S ·ナ

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