Answer:
Gravitational Potential Energy of an object on the ground is equal to 0 J.
Step-by-step explanation:
The equation for gravitational potential energy is:
U = mgh
m = mass
g = acceleration of gravity
h = height of the object (in meters) off the ground
When the height of an object is 0, aka being on the ground, everything in the equation is multiplied by 0.
U = m * g * 0 = 0
This means that whenever an object is on the ground, it's gravitational potential energy is 0.