Question

A body from height H falls freely under gravity and reaches the ground.time it takes to reach the ground is

Answer 1

Answer:

u=0

a=g=10m/s²

t=t sec

h=H

Using equation of motion,

$s = ut + \frac{1}{2} at {}^{2}$

$h = \frac{1}{2} \times 10 \times t {}^{2}$

$h = 5t {}^{2}$

$t {}^{2} = \frac{h}{5}$

$t = \sqrt{ \frac{h}{5} }$

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