A ball is thrown vertically upward e with an initial velocity of \( 49 \mathrm{~ms}^{-1} \). Cal...

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A ball is thrown vertically upward e with an initial velocity of \( 49 \mathrm{~ms}^{-1} \). Calculate (i) The maximum height attained. (ii) The time taken by it before it reaches the ground again.
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