Question

A gun of mass 5kg fires a 50g bullet with a velocity of 200metre per second. The recoil velocity of the gun is?

Answer 1

mass of gun = 5kg
mass of bullet = 50gm =0.050 kg
velocity = 200 m/s
momentum of bullet =200 kgm/s= momentum of gun =5 * v
V =recoil velocity =200 / 5 =40 m/s
So , the recoil velocity is 40m/s