Physics, 26.07.2019 02:50 21121212cutecheytown

Mary weighs 488 n and she walks down a flight of stairs to a level 4.1 m below her starting point. what is the change in mary's potential energy? answer in units of j.

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Mary weighs 488 n and she walks down a flight of stairs to a level 4.1 m below her starting point. w...