Q 11-03-003NEETNEET 2023Top questionEasy
A bullet is fired from a gun at the speed of $280\ \text{m s}^{-1}$ in the direction $30°$ above the horizontal. The maximum height attained by the bullet is ($g = 9.8\ \text{m s}^{-2}$, $\sin 30° = 0.5$) :
Answer: (C) $1000$ m
Concept. Maximum height $H = \dfrac{u^2\sin^2\theta}{2g}$.
Step 1. Substitute.
$$H = \frac{280^2 \times 0.25}{2 \times 9.8} = \frac{19600}{19.6} = 1000\ \text{m}$$
Answer. $1000$ m (Option C).
Solution by Sreeraj P, M.Sc Physics