Compared to the earth , planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the earth s surface to infinity, the amount of energy required to move that same object from planet X s surface to infinity is:.

Same

Explanation:

Compared to the earth , planet X has twice the mass and twice the radius. This means that compared to the amount of energy required to move an object from the earth's surface to infinity, the amount of energy required to move that same object from planet X's surface to infinity is the same with that of the amount of energy required to move objects from earth