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. A boy weighing 150N runs up a flight of stairs. The vertical distance between the floor is 5.5m. How much work is done by gravity? 180 degree

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2. A girl weighing 120N runs down a flight of stairs. The vertical distance between the floor is 5.5m. How much work is done by gravity? 0 degree

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Answer:

1. work force x distance

given 5\5 5.5\180

solution

=(5.5+5.5)x50

=(11x150)

=1650

final answer:1650 (j) joules

2. w=840 j

workforce x distance

=120N (7m)

w=840 j

Explanation:

hope it help

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