A2-kg ball is held 4 m above the ground. relative to the ground its potential energy is

78.4 J

Explanation:

The gravitational potential energy of the ball (relative to the ground) is given by

where

m = 2 kg is the mass of the ball

g = 9.8 m/s^2 is the acceleration due to gravity

h = 4 m is the height of the ball above the ground

Substituting numbers into the formula, we find

i need the answer to this too but idk it ; -;