Answer : Height, h = 20.4 m
Explanation :
It is given that,
Mass of an object, m = 500 g = 0.5 kg
Gravitational potential energy, PE = 100 J
The Gravitational potential energy is the energy which is possessed due to the height and gravity of an object. It is given as :
PE = m g h
where,
h is the height of the cliff.
[tex]100\ J=0.5\ kg\times 9.8\ m/s^2\times h[/tex]
h = 20.40 m
So, the height of the cliff is 20.4 m.
