Question

derive recoil velocity by conservation law of momentum.....​

Answer 1

Explanation:

The recoil velocity of the gun can be calculated from the principle of conservation of linear momentum. Let m1 = mass of bullet, = velocity of bullet, m2 = mass of gun and = velocity of recoil of the gun. Before firing, the gun and the bullet both are at rest. Therefore, total momentum before firing = 0.

Answer 2

V=-mv/ M

here,
V is velocity of Gun
M is mass of Gun
m is mass of bullet
v is velocity of bullet