Question

if a gun applied force on a bullet is 100N due to which bullet gains momentum of 25Ns. the number of bullets fired from gun per second is?​

Answer 1

Explanation:

Correct option is

B

Three

Given : m=40 g =0.04 kg v=1200 m/s F=144 N

Let n be the number of bullets that can be fired per second.

The force exerted by man must balance the change in momentum of the bullets per second.

∴ F=mnv

OR 144=0.04×v×1200 ⟹n=3 bullets per second