A metal ball falls from a height of 1 m on to a steel plate and jumps upto a height of 81 cm . The coefficient of restitution of the ball and steel plate is

Question

A metal ball falls from a height of 1 m on to a steel plate and jumps upto a height of 81 cm . The coefficient of restitution of the ball and steel plate is, 0.2, 9, 0.9, 90

MARKS App · Accepted Answer

e = V e l o c i t y o f s e p r a t i o n V e l o c i t y o f a p p r o a c h e = h 2 h 1 = 81 100 = 0.9

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