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Conservation of momentum is a law which states that, "If a collision occurs between two bodies in an isolated system then the sum of the total momentum before collision is exactly equal to the collision after momentum". In other words, the momentum lost by a body is equal to momentum gained by the other body. This law is a very important law of physics because it advocates that total momentum of the system is also constant.
Suppose, a body has mass m1 and it is moving with a velocity of v1. This body collides with another body of mass m2 and that body is also moving with v2. Momentum is equal to product of mass and velocity, therefore, according to law of conservation of momentum:
m1 * change in v1 = m2 * change in v2
Suppose, a body has mass m1 and it is moving with a velocity of v1. This body collides with another body of mass m2 and that body is also moving with v2. Momentum is equal to product of mass and velocity, therefore, according to law of conservation of momentum:
m1 * change in v1 = m2 * change in v2
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