Question

.
A stone thrown upward with a speed u from the top of the tower reaches the ground with a velocity 3u
The height of the tower is
(A)
3u^2/g
(B)
4u^2/g
(C)
6u²/g
(D)
9u²/g
answer is 3u^2/g how ❓ please explain...​

Answer 1

Answer:

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