It takes 1.3 sec for the object to reach the ground.
Explanation:
Potential energy :
Potential Energy is the energy stored in a body or system by virtue of its position in a field of force or by its configuration
KINETIC ENERGY :
The energy possessed by a body by virtue of its motion is called its kinetic energy.
Given : v = 12 m/s
height = 32 m
just before hitting the ground,
Potential Energy = kinetic energy
mgh = 1/2 mv²
gh = 1/2 v²
9.8 x 32 = 1/2 v²
627.2 = v²
v = 25.04 m/s
we know that v = displacement /time
= 25.04 = 32 /t
t = 1.3 sec
It takes 1.3 sec for the object to reach the ground.
