A particle of mass `m` moving with a speed `u` strikes a smooth horizo – InterviewSolution

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1.	A particle of mass `m` moving with a speed `u` strikes a smooth horizontal surface at an angle `45^(@)`. The particle rebounds at an angle `phi` with speed `v`. If coefficient of restituion is `(1)/(sqrt(3))`, then angle `phi` is A. `30^(@)`B. `45^(@)`C. `60^(@)`D. `37^(@)`
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