Question

What is the difference in PE between a 82.5kg adult on a 1.25 m wall, and a 14.7 kg child on the same wall?(unit=J)PLEASE HELP

Answer 1

Step-by-step explanation:

PE=mgh

let PEₐ for adult

and PEᵢ for child

g=10ms⁻²

Difference in PE=PEₐ-PEᵢ

(82.5*10*1.25)-(14.7*10*1.25)

1031.25-183.75

PE=847.5 joules