A constant force of 20 N acts on a body for 5s. The change in the linear momentum of the body is

$\left(\text{or}\right)$

$\text{F}=\frac{\text{mv}-\text{mu}}{\text{t}}$ $\left[\because \text{mv}-\text{mu}=\text{change in linear momentum}\right]$

$20=\frac{\text{mv}-\text{mu}}{5}$

$20\times 5=\text{mv}-\text{mu}$

$\text{mv}-\text{mu}=100\text{Ns}$

Change in momentum  $\text{P}=100\text{Ns}$