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In a collision why the momentum of before collision and after a collision are equal
The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects afterthe collision. Consider two balls which are going to collide with each otherlet initial momentum be Pconsider both the balls as systembefore colln Fnet=0during colln Fnet=0after colln Fnet=0Fnet=dp/dt=0dp=change in momentum=0therefore final momentum - initial momentum=0final momentum=initial momentum=P
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