A ball moving with velocity 2 
collides head on with another stationary ball of double the mass. If the coefficient of restitution is 0.5, then their velocities 
after collision will be
Text Solution
Verified by ExpertsThe correct answer is:
A
: Here, 
Coefficient of restitution, 
Let 
and 
be their respective velocities after collision.
Applying the law of conservation of linear
momentum, we get
or 
or 
(i)
By definition of coefficient of restitution,
or 
(ii)
Solving equations (i) and (ii), we get
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