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To test the manufactured properties of 1...

To test the manufactured properties of `10N` steel balls, each ball is released from rest as shown and strikes a `45^@` inclined surface. If the coefficient of restitution is to be `e=0.8`, determine the distance s, where the ball must strike the horizontal plane at A. At what speed does the ball stike at A? (`g=9.8m//s^2`)

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