Question

A bullet of mass 10 g is fired from a rifle. The bullet takes 0.003 s to move through its barrel and leaves with a velocity of $300m{s}^{-1}$. What is the force exerted on the bullet by the rifle?

• A. 1000 N
• B. -1000 N
• C. 1500 N
• D. -1500 N

Answer 1

The correct option is A 1000 N

$v=300$ $m{s}^{-1}$ ; $u=0$ ,$t=0.003$ s ,$m=0.01$ kg

Force exerted by the bullet on the rifle =$\frac{m(v-u)}{time}$

$F=1000$ N