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A ball of mass 500 gm moving with speed...

A ball of mass 500 gm moving with speed 2m/s collide to a floor making an angle of `45^(0)` with vertical.If coefficient of restitution is `(1)/(sqrt(3))` ,then the angle made by the ball with normal,after collision is
(A) `60^(@)`

(B) `30^(@)`

(C) `45^(@)`

(D) `37^(@)`

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