A 60 kg person who was at a height 90 meters climbs down to the height of 60 meters what was the change of his gpe

ΔU = -17640 J

Explanation:

use the formula ΔU = mgΔh for the change in potential energy

m = 60 kg

g = 9.8 m/s^2

Δh = 60 - 90 = -30 m

ΔU = mgΔh

ΔU = 60 * 9.8 * -30

ΔU = -17640 J

there was a decrease of 17640 joules in potential energy

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .