A ball moving on a smooth horizontal table hits a ro... - Solved MCQs & Answer

1998Civil EngineeringMedium

A ball moving on a smooth horizontal table hits a rough vertical wall, the coefficient of restitution between ball and wall being 1/3. The ball rebounds at the same angle. The fraction of its kinetic energy lost is________?

A8/9

B2/3

C1/9

D1/3

Correct answer

A. 8/9

Explanation

The correct answer is 8/9.

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