sarahgreenlee8 sarahgreenlee8

10-11-2020
Physics

contestada

A boy weighing 150 N goes (a) up and (b) down a flight of stairs. The vertical distance between the floor is 5.5 m. How much work is done by gravity

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wvvxir8861 wvvxir8861

10-11-2020

The answer would be A

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