Question

A stone dropped from a window reaches the ground in .5 sec.calculate the speed just before it reaches the ground

Answer 1

d an answer to your question A stone dropped from a window ... This is the speed just before stone hits the ground ·

Answer 2

use v=u+at, where v is final velocity and u is intial volcity

if the stone is dropped then initial velocity is zero.

hence now we have, v=at, where a= 9.8

so v= 9.8 X 0.5 = 4.9m/s