Question

A bullet of mass `50g` is fired from a gun of mass `6kg` with a velocity of `400m//s`. Calculate the recoil velocity of the gun.

Answer 1

Here, `m_(1)=50g =(50)/(1000)kg = 1/20kg, m_(2)= 6kg, v_(1)=400 m//s, v_(2)?`
As `m_(1)v_(1)+m_(2)v_(2)=0, v_(2)= -(m_(1)v_(1))/(m_(2))= -(1xx400)/(20xx6)= -3.3m//s`.