# 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

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) $\dfrac{3u^{2}}{g}$

(B) $\dfrac{4u^{2}}{g}$

(C) $\dfrac{6u^{2}}{g}$

(D) $\dfrac{9u^{2}}{g}$

Answer : option (B)

Solution :

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