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Screenshot_2019-03-02-15-10-57-209_com.android.chrome.png Two guns A and B can fire bullets at speeds 1 km/s and 2km/s respectively. From a point on a horizontal ground, they are fired in all possible directions. The ratio of maximum areas covered by the bullets fired by two guns , on the ground is:

Answers (1)

\Theta = 45^{0}

R_{max}=\frac{u^{2}\sin 2 (45) }{g}=\frac{u^{2}\times 1}{g}=\frac{u^{2}}{g}

Range=R=\frac{U^{2}sin2\Theta }{g}

R\prec U^{2}

and\: \: A\approx \Pi R^{2}

\Rightarrow A\prec R^{2}

\Rightarrow A\prec U^{4}

\Rightarrow \frac{A_{1}}{A_{2}}=\frac{U_{1}^{4}}{U_{2}^{4}}=\left [ \frac{1}{2} \right ]^{4}=\frac{1}{16}

 

450 Sin 2(45) nge = R — U •sin•2f-3 R —K [12 pnd A IIR A1 [14 2 1 16
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