Question

A body of mass 3 kg is dropped from a building the velocity of the body after 3 is

Answer 1

$t = \sqrt{ \frac{2h}{g} }$
$h = 45m ====== v = \sqrt{2gh} = 30m {s}^{ - 1}$
Here is your answer
GLAD YOU LOKE IT
PLEASE NOTE MY ANSWER AS BRAINLIEST