lenfromkits said:
but relative to itself, it is not moving and it is all potential energy.
This is a silly topic and I shouldn't have contributed, but I can't let that pass, it's fallacious.
Not only that, it perpetuates the OP's initial misunderstanding.
Energy isn't some thing like a liquid that you can pour from one place to another, it's a book-keeping device that we use to keep track of the movement of, and forces between objects.
Nor does an object exist in relation to something called the 'universe', it exists in relation to other objects. Energy is a measure of that relationship so that you cannot talk about the energy of an object, only it's energy in relation to another.
In a 'universe' that consisted of just two objects, moving relative to each other, one would have an energy (classically) of 1/2mv^2 relative to the other. The other would have an energy of 1/2mv^2 relative to the first.
(K.E. is vectorial so the two energies would be directed in opposite directions, making the vector sum zero.)
The energy of either object, relative to a third would be a function of
it's relative velocity. Every time you move the frame of reference, you change the zero point for measurement of energy.
Since an object doesn't move relative to itself, it's KE relative to itself is zero. Potential energy doesn't come into it.