Q. A gun fires $N$ bullets per second, each of mass $m$ with velocity $v$. The force exerted by the bullets on the gun is
A) $vN\ m$
B) $\frac{mv}{N}$
C) $mvN^{2}$
D) $\frac{mv^{2}}{N}$
Explanation
(a) The bullets are initially at rest
Change of momentum per second $= mvN$
Where $N$ is the number of bullets fired per second
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.