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A large number of bullets are fired in all direction with the same speed 'v'. What is the maximum area on ground on which the bullets can spread? Answer: - \[\huge{\color{red}{\frac{\pi v^4}{g^2}.}}\]
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I suppose you mean fired from the ground. Anyway, as you probably know (if you don't, just ask and I'll prove it) the maximum travelled distance is at 45° and is equal to \[d=\frac{v^2}{g} \]. So the area is \[=\pi d^2 =\] to your answer :P
oh ok thanx a lot i gt it:)
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