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## 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

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## Answers ( )

Answer: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

Decrease of joules in it