Questions
Two particles of same mass are permitted to move towards each other along the line joining their centers of mass. At a particular moment of time their speeds are v and 2 v What is the speed of their common center of mass at this instant ?
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Correct option is B
L€t m be the mass of each particle. The velocity of center of mass is given by vCM=m1v1+m2v2m1+m2 =m-v+m(2v)m+m=mv2m =0⋅5VSimilar Questions
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all collisions are elastic, the velocity of sphere 4 iust after collision is
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