Question

A large number of bullets are fired in all directions with same speed $u$. What is the maximum area on the ground on which these bullets will spread:

• A. $\pi \frac{u^2}{g}$
• B. $\pi \frac{u^4}{g^2}$
• C. ${\pi }^2\frac{u^4}{g^2}$
• D. ${\pi }^2\frac{u^2}{g^2}$

Answer 1

The correct option is B $\pi \frac{u^4}{g^2}$

Maximum range of the bullets $R_{max}=\frac{u^2}{g}$

Area covered $=\pi R_{max}^2=\pi \frac{u^4}{g^2}$