Question

A bullet of mass 10g is fired from a gun of mass 1 kg if the recoil velocity is 5m/s the velocity of the muzzle is

Answer 1

muzzel velocity is 500 m/sec

Answer 2

The muzzle velocity of the bullet fired would be 500 m/s

1) According, to the third law of motion by newton, every action has an equal and opposite reaction.

2)  so, if the bullet exerts a momentum when going forward, same amount of momentum will push the gun backward

3) Hence, the momentum of both would be equal

10 g *  v = 1000 g * 5 m/s

v = 500 m/s