Question

A bullet mass 10 gm is fired from a gun of mass 1kg. 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

Answer 1

Answer: (D)

500 m/s

Answer 2

$m_{G}v_{G} = m_{B}v_{B}$ ⇒ $v_{B} = \frac{m_{G}v_{G}}{m_{B}} = \frac{1 \times 5}{10 \times 10^{- 3}} = 500m/s$