Question

A 60-kg person walks from the ground to the roof of a 70 m tall building. How much gravitational potential energy does she have at the top of the building?

Answer 1

Explanation:

gravitational potential energy =mgh

60×10×70=42000

Answer 2

Answer:

P.E=41160J

Explanation:

As P.E=mgh

m=mass=60kg

g=9.8m\s^2

h=height=70m

so PE=60×9.8×70

=41160J