A ball is projected vertically upward with a velocity of \( 40 \mat...

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A ball is projected vertically upward with a velocity of \( 40 \mathrm{~m} / \mathrm{s} \) from the top of a cliff \( 100 \mathrm{~m} \) high. The ratio of time taken to reach the highest point to the total time taken to reach the ground is
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