A bullet of 10   g leaves the barrel of gun with a velocity of 600   m   s - 1 . If the…

The formula to calculate the impulse $\left(J\right)$ on the gun is given by

$J=m\left(v-u\right) ...\left(1\right)$

where, $m$ is the mass, $u$ is the initial velocity and $v$ is the final velocity of the bullet.

Substitute the values of the known parameters into equation (1) to calculate the required impulse.

$\begin{array}{rcl}J& =& 10 \mathrm{g}\times \frac{1 \mathrm{kg}}{1000 \mathrm{g}}\times \left(600-0\right) \mathrm{m} {\mathrm{s}}^{-1}\\ & =& 6 \mathrm{N} \mathrm{s}\end{array}$