Question

Choose the correct statement. i)The momentum of the gun is greater than that of the shot. ii)The momentum acquired by the gun and shot have the same magnitude iii) Gun and shot acquire the same amount of kinetic energy​

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