Question

State and prove the conservation of linear
momentum.
State Newton's third law of motion.
Derive an expression for recoil velocity of a
gun.​

Answer 1

Explanation:

When a bullet is fired from the gun, due to reaction force , the gun recoils in the direction opposite to the motion of bullet. The velocity with which it recoils is called as Recoil Velocity. Derivation For recoil velocity of Gun: ... Total momentum before recoil = Total momentum after recoil.

Answer 2

Newton's third law states that for a force applied by an object A on object B, object B exerts back an equal force in magnitude, but opposite in direction. This idea was used by Newton to derive the law of conservation of momentum. ... B=m_{2}(v_{2}-u_{2}) (change in momentum of particle B)