Question

A bullet of 5 $g$ is fired from a pistol of 1.5 kg. If the recoil velocity of pistol is 1.5 $\frac{m}{s}$, what is final momentum of pistol?

• A. $10kg\frac{m}{s}$
• B. $2.5kg\frac{m}{s}$
• C. $1.5kg\frac{m}{s}$
• D. $2.25kg\frac{m}{s}$

Answer 1

The correct option is D $2.25kg\frac{m}{s}$

Momentum of pistol = Mass x Velocity
$=1.5\times 1.5$
=$2.25kg\frac{m}{s}$