For this case we have that by definition, the potential energy of an object is given by:
[tex]U = mgh[/tex]
Where,
- m: mass of the object
- g: acceleration of gravity
- h: height of the object
Substituting values we have:
[tex]U = (2) (9.8) (4)\\U = 78.4 J[/tex]
Answer:
Relative to the ground its potential energy is:
[tex]U = 78.4 J[/tex]
