A2.80 kg mass is dropped from a height of 4.50 m. find its potential energy(pe) at the moment it is dropped.

The answer to your question is: PE = 123.6 J

Explanation:

Data

mass = 2.80 kg

height = 4.50 m

potential energy = PE = ?

gravity = g = 9.81 m/s²

Formula

Substitution

PE = (2.80)(9.81)(4.50)

PE = 123.6 J

Dimensional analysis

       =

       = Newton meter

       = Joule = J

measure their densities same density, same sub