Q39 of 119 Page 159

A ball falls on the ground from a height of 2.0 m and rebounds up to a height of 1.5 m. Find the coefficient of restitution.

Let the velocity of the ball when it approaches the ground be u


And v is the velocity of the ball when it separates from the ground.


Since,



Where g is the acceleration due to gravity and h is the height.


Therefore,



And



Now,








Where, l is the coefficient of restitution.


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