These terms are defined, that is, we decide what they are. A mass when moving has kinetic energy. When it is still it has potential energy depending on its position. Energy is not a fluid you capture in a bottle, it is a number in an equation.
When a mass moves, it acquires kinetic energy. Where does it come from? Because a force acted on it, causing it to move. What is a force? Its what happens when a mass is accelerated. What is an acceleration? Its a change in velocity. What is velocity? A change in location.
Energy is just mathematical combinations of matter, space and time. Its just a word for how a moving object is different from a stationary one. It is not a thing, it is a relationship between things.
I'm sorry, that's all there is to it. And I can't explain it any better than that.
Space/Science » in reply to Re: How to get a cosmos from nothing.
Re: How to get a cosmos from nothing.
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