A ball (initially at rest) falls vertica...

A ball (initially at rest) falls vertically for 2 s and hits a smooth plane inclined at `30^(@)` to the horizontal. The coefficient of restitution is `(5)/(8)`. The distance along the plane between the first and second impact of the ball is

40.63 m

20.63 m

30.63 m

50.63

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