A ball of mass m moving with velocity v, makes a headon elastic collision with a ball of the same mass moving with velocity 2v towards it. Taking direction of v as positive, find velocities of the two balls after collision.
A
and 
B
and 
C
and 
D
and 
Text Solution
Verified by ExpertsThe correct answer is:
D
Initial velocities of balls are 
and 
, respectively, and we know that for given condition velocities get interchanged after collision. So, the velocities of two balls after collision are 
and 
respectively.
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