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Two cars A and B are running with speed of 25 m/s and 20 m/s respectively...

Two cars A and B are running with speed of 25 m/s and 20 m/s respectively in the same direction with same mass of 900 kg. If they hit each other, find out (a) initial momentum of each car, (b) total initial momentum of the system, (c) if after accident if car A moves with 30 m/s in the same direction, find out what is the speed of car B?

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