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A 70 g ball B dropped from a height h(0)...

A `70 g` ball B dropped from a height `h_(0) = 9m` reaches a height `h_(2) = 0.25 m` after bouncing twice from identical `210 g` plates. Plate A rests directly on hard ground, while plate C rests on a foam-rubber mat. Determine
(i) the coefficient of restituation between the ball and the plates,
(ii) the height `h_(1)` of the ball's first bounce.

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