Question

22. A machine gun fires a bullet of mass 40g with a velocity 1200 ms'. The man hold- ing it can exert a maximum force of 144 N on the gun. How many bullets can he fire per second at the most?
(1) One (2) Three (3) Two (4) Four​

Answer 1

Answer:

The answer is 2) three

Hope it will help you

Answer 2

Answer:

option 2)

three

Explanation:

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