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Questions  

A machine gun fires a bullet of mass 40 g with a velocity 1200 ms-1. The man holding it, can exert a 
maximum force of 144 N on the gun. How many bullets can be fired per second at the most?

a
One
b
Four
c
Two
d
Three

detailed solution

Correct option is D

F=ΔpΔt=n(mv)Here, n = number of bullets fired per second.∴       n=Fmv=1440.04×1200=3

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