define law of conservation of momentum please help asap
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Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant. ...
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According to the law of conservation of momentum, for a collision between two bodies. Total momentum before collision = Total momentum after the collision. m1u1+m2u2=m1v1+m2v2. Example: When a shot is fired from a gun, the gun recoils. When the shot is fired, it leaves the barrel with a certain force.
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