Answer:
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
[tex]Ep = mgh[/tex]
Substitution
PE = (2.80)(9.81)(4.50)
PE = 123.6 J
Dimensional analysis
= [tex]\frac{kg}{1} \frac{m}{s^{2} } \frac{m}{1}[/tex]
= Newton meter
= Joule = J
