# Physics question sos!?

An arrow is shot horizontally from the top of a tower at a speed of 15m/s, and hits the ground with a speed of 25m/s, what is the height of the tower?

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- NCSLv 77 months agoFavorite Answer
conservation of energy yields

v² = u² + 2gh

25² = 15² + 2 * 9.8 * h

and so

h = 20 m

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