Question

A body is dropped from a height of 320cm.the acceleration due to the gravity is a)how long does it takes place?b)what is the velocity with which ot will strike the ground?

Answer 1

dear
using h=1/2g$t^{2}$

from here t can be calculated 

and then using 
$v= \sqrt{2gh}$
v can also be calculated

hope it helps you

mark it as brainliest...