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WB JEE 2017
MCQ (More than One Correct Answer)
+2
-0
A small steel ball bounces on a steel plate held horizontally. On each bounce the speed of the ball arriving at the plate is reduced by a factor e (coefficient of restitution) in the rebound, so that Vupward = eVdownward. If the ball is initially dropped from a height of 0.4 m above the plate and if 10 seconds later the bouncing ceases, the value of e is
Questions Asked from Center of Mass (MCQ (Multiple Correct Answer))
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