Q22 of 25 Page 130

A bullet of mass 10 g is fired at a speed of 400 m/s from a gun of mass 4 kg. What is the recoil velocity of the gun?

Given,

Mass of bullet = m1





Mass of gun = m2



Initial speed of bullet = u1



The initial speed of gun = u2



Initial momentum = pi



Final speed of bullet = v1



final speed of gun = v2



Initial momentum =



Using Newton’s second law of motion, i.e.



Now since no external force acts on the system hence,



Hence, momentum









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