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A ball is thrown horizontally from the top of a tower at 30m high, and lands 15m from its base. What is the ball's initial speed?
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A ball is thrown horizontally from the top of a tower at 30m high, and lands 15m from its base. What is the ball's initial speed?

User Michael McGuire
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6 votes

Answer:

This question requires gravitational acceleration,t=（2h/g）^ 1/2,Level the initial speed is 15/t.

User Benzen
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