Question

A body is thrown vertically upwards with a velocity of 20m/s from the top of a tower 60 m height . when does the body reaches the ground?

Answer 1

DATA,v=-20m/s
s=60m ,velocity=distance/time
-20=6×time
time=3.3sec

Answer 2

Hi friend,

We know that,

Velocity = distance/time

Since it moves against the gravity it is taken as negative.

V= -20m/s s= 60m

Time= distance /velocity

Time= 30 sec^-1.

Hope this helped you a little!!!