The maximum horizontal range of a gun is \( 16 \mathrm{~km} \). If \( \mathrm{g}=10 \mathrm{~m} ...

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The maximum horizontal range of a gun is \( 16 \mathrm{~km} \). If \( \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2} \), the muzzle velocity of the shell must be :-
(1) \( 1600 \mathrm{~m} / \mathrm{s} \)
(2) \( 400 \mathrm{~m} / \mathrm{s} \)
(3) \( 200 \sqrt{2} \mathrm{~m} / \mathrm{s} \)
(4) \( 160 \sqrt{10} \mathrm{~m} / \mathrm{s} \)
\( \mathrm{P} \)
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