Question

State the law of conservation of momentum.Calculate recoil velocity of gun

Answer 1

Recoil is explained by the law of conservation of momentum, and so it is easier to discuss it separately from energy. The nature of the recoil process is determined by the force of the expanding gases in the barrel upon the gun (recoil force), which is equal and opposite to the force upon the ejecta.

what is the formula for recoil velocity. You solve this by using the law of conservation of momentum. The momentum of the gun and that of the bullet are equal and opposite. Let us assume a gun of 20 kg shoots a bullet of 1 kg in a velocity of 100m/s.