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A ball moving with velocity 2 m/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:

1. 0, 1
2. 1, 1
3. 1, 0.5
4. 0, 2

Correct answer: 1, 0.5

Solution

Using the coefficient of restitution formula and conservation of momentum, the velocities after collision are calculated as 1 m/s for the first ball and 0.5 m/s for the second ball.

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