Question

The maximum range of a gun on horizontal terrain is 1 km. If g = 10 ms^-2, what must be the muzzle velocity of the shell?

Moderate

Solution

$R_{m a x} = \frac{u^{2}}{g} at θ = 45 °$
$∴ u = \sqrt{g R_{\max}} = 100 {ms}^{- 1}$

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