A ball is thrown vertically upwards with a velocity of \( 49 \mathrm{~m} / \mathrm{s} \). Calcul...

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A ball is thrown vertically upwards with a velocity of \( 49 \mathrm{~m} / \mathrm{s} \). Calculate
(i) the maximum height to which it rises,
(ii) the total time it takes to return to the surface of the earth.
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