A stone thrown upward with a speed \( u \) from the top P of a towe...

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A stone thrown upward with a speed \( u \) from the top
P of a tower reaches the ground with a velocity \( 4 u \). The

W height of the tower is:
(1) \( \frac{15 u^{2}}{2 g} \)
(2) \( \frac{7 u^{2}}{2 g} \)
(3) \( \frac{16 u^{2}}{g} \)
(4) Zero
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