Question

A ball moving velocity 2m/s collides head on with another stationary ball of double the mass. if the coefficient of restitution is 0.5, then their velocities (in m/s) after collision will be

Answer 1

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Answer 2

Explanation:

Here, m1 = m, m,m2 = 2m u1 = 2 m/s, u2 = 0

Coefficient of restitution, e = 0.5 Let v1 and v2 be their respective velocities after collision.

Applying the law of conservation of linear momentum, we get By definition of coefficient of restitution,

Solving equations (i) and (ii), we get v1 = 0 m/s, v2 = 1 m/s