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 the final momentum of the pistol?

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

Answer 1

The correct option is D

$2.25$ $\frac{kgm}{s}$

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