I mean yeah thats true but that still means the cube would heat up or something and then you could use that to generate infinite energy. The point is you can accelerate something to a speed without putting in the energy needed to accelerate it.
Comment on Which is it Lemmy?
JustAnotherKay@lemmy.world 4 days agoExtra momentum out of nowhere (classic portal above and below infinite loop as an example)
Does that actually loop infinitely? Don’t you just reach a terminal velocity and then maintain that momentum?
AI_toothbrush@lemmy.zip 4 days ago
JustAnotherKay@lemmy.world 4 days ago
The cube wouldn’t necessarily heat up much while approaching terminal velocity.
Its close to infinite energy because you never have to reach the ground, so you technically have infinite potential energy but when you convert that potential energy into kinetic or some other type of energy, the vast majority of that potential will disappear instantly
AI_toothbrush@lemmy.zip 4 days ago
But that doesnt really matter cause my argument of it breaking physics still stands. Little infinite energy and a lot is the same.
ericwdhs@discuss.online 4 days ago
Terminal velocity is only reached because the object (or player) is colliding with the air. Momentum is still being added. It’s just also transferring out into the air. You can kind of think of the object as being a fan blade running on zero power. It’s technically a source of infinite energy, but it might be hard to extract from that exact setup. If we could do this in the real world, we’d tweak it to just be water in a vertical pipe with a turbine extracting the free momentum.