In the previous question; the mean velocity of the rocket reaching the maximum height is : (A) \...

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In the previous question; the mean velocity of the rocket reaching the maximum height is :
(A) \( 100 \mathrm{~m} / \mathrm{sec} \)
(B) \( 50 \mathrm{~m} / \mathrm{sec} \)
(C) \( 500 \mathrm{~m} / \mathrm{sec} \)
(D) \( 25 / 3 \mathrm{~m} / \mathrm{sec} \)
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