Question
A sphere of mass m moving with velocity u collides with stationary sphere of same mass. If e is the coefficient of restitution, then find the velocities of two masses after collision.
Solution
Let v1 and v2 be the velocities of colliding body and target body after collision respectively.
Applying conservation of momentum,
...(1)
Using the definition of coefficient of restitution,
...(2)
Solving (1) and (2), we get
and 
