Two identical billiard balls are in contact on a smooth table. A third identical ball strikes them symmetrically and comes to rest after impact. The coefficient of restitution is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
In x direction : Applying conservation of momentum
mu = 2mvcos30
v = 
= 
Also e = 
= 
∴ e = 
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