The answers zero because it is on the ground there's no way it can move without an external force.
The answer is 0 potential energy= mass• gravity (9.8m/s)• height. Your mass 3kg. I believe your need to convert this to grams (3000g) and then multiply by 9.8. Since your height is 0 because the ball is on the ground then your potential energy is 0
The potential energy of a 3-kilogram ball that is on the ground is 0 joules. This is because potential energy is calculated using the height above the ground, and in this case, the height is 0 meters. Therefore, any object resting on the ground has zero gravitational potential energy.
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