In a collision between two solid spheres, velocity of separation along the line of impact (assume no external forces act on the system of two spheres during impact) :
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Verified by ExpertsThe correct answer is:
A
e = 
For elastic collision e = 1
|Velocity of separation| = |velocity of approach|
For inelastic collision e < 1
So |velocity of separation| < |velocity of approach|
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