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A tennis ball bounces down a flight of stairs, striking each step in turn and rebounding to half to height of the step. The coefficient of restitution isA. `(1)/(2)`B. `(1)/(sqrt2)`C. `(1)/(4)`D. 1 |
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Answer» Correct Answer - B Let h be the height of each step. Then `e=(v)/(u)=(sqrt(2gh))/(sqrt(2g(2h)))=(1)/(sqrt2)` |
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