HomeEngineeringA 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___________________? 88. 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___________________?By Admin / September 7, 2025 A. 1/3 B. 2/3 C. 1/9 D. 8/9 ✅ The correct answer is option D.
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