Q. A Bullet of mass $10\ gm$ is fired from a gun of mass $1\ kg$. If the recoil velocity is $5\ m/s$, the velocity of the muzzle is
A) $0.05\ m/s$
B) $5\ m/s$
C) $50\ m/s$
D) $500\ m/s$
Explanation
(d) $m_{G}v_{G} = m_{B}v_{B} \Rightarrow v_{B} = \frac{m_{G}v_{G}}{m_{B}} = \frac{1 \times 5}{10 \times 10^{- 3}} = 500\ m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.