First slide

Vertical projection from ground

Question

A body is projected up with velocity u. It reaches a point in its path at times $t_{1}$ and $t_{2}$ seconds from the time of projection. Then ( $t_{1}$ + $t_{2}$ ) is

Moderate

A

2u/g
B

u/g
C

$\large \sqrt {\frac{{2u}}{g}}$
D

$\sqrt {\frac{{u}}{g}}$

Solution

$t_{1}$ + $t_{2}$ = time of flight = 2u /g

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