Question

An object takes 5s to reach the grond from a height of 5cm on a planet. What is the value of g on the planet?

Answer 1

$t = \sqrt{ \frac{2h}{g} }$
$5 = \sqrt{ \frac{10}{g} }$
by squaring,f
$g = \frac{10}{25 } = 0.4$
$g = 0.4 \frac{m}{ {s}^{2} }$