https://www.thelamboy.com/comics/love-must-hate-evil

B, because position and speed are relative,

it would slow the train down equal to the momentum gained by the people.

Cool. I don’t know if that aligns the the current theory and frankly, don’t care enough to research it.

But that doesn’t disprove my statement. Unless all matter juices itself into energy, heat will exist. heat is a property of matter unless said matter is at -273 C (which seems impossible that that is the temperature for the universe to settle on)

But… I’m not a theoretical physicist and you probably aren’t one either. So we are both out of our depth.

Heat - A form of energy associated with the motion of atoms or molecules

That would still exist. However a “concept” being defined as an idea, would not exist as there would be no living thing to think it up.

So heat would exist, the “concept of heat” wouldn’t. So your first statement is technically correct. Your second statement is wrong by the primary definition of heat.

Kinda? All energy will dissipate until everything is the same temperature. Idk what that temperature will be but it might be pretty cold. But heat won’t just, like, go away. It will homogenize.

Why does this make me so uncomfortable