According to GR, the mass undergoes compulsory collapse once the Schwarzchild radius, [euqal to the EH] is reached the collapse continues, but we cannot apply GR at the quantum/Planck level. Whatever state the mass/energy exists there [probably some energetic state I imagine] is unknown.
= ? event horizon lol
The diameter of the EH [Event Horizon where escape velocity euaqls "c'] is determined by how much mass has fallen below it.
If you're are talking about what I think you are talking about, then I see no reason why not. Subatomic particles can exist as energy.
Energy is not a thing. Energy is a property of a thing.
Many are both.
Energy is not defined as acceleration. Acceleration adds energy to a system, and that energy must come from somewhere else. In many cases, you can define kinetic energy with e=.5mv^2.
Right. So does the concept of love. But love (like energy) isn't a thing.
Energy is a property of a system, not a thing that has a physical, material existence.
Sorry that you do not understand that. Energy is not a physical, material thing.
Depends on the system. A rocket gets its kinetic energy from the mass of the exhaust being accelerated by the rocket engine; the reaction to that drives the rocket forward. A pot on the stove gets its thermal energy from conduction of heat energy from a burner on the stove.