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A body is projected vertically upwards. If $t_{1}$ and $t_{2}$ be the times at which it is at height h above the projection while ascending and descending respectively, then h is
Explanation
$h = ut_{1} - \frac{1}{2}gt_{1}^{2}$ Also $h = ut_{2} - \frac{1}{2}gt_{2}^{2}$ After simplify above equations, we get $h = \frac{1}{2}gt_{1}t_{2}$.