Imagine there's a train, that's completely sealed off, so the air inside is isolated, and no air can go in or out. And the train is moving at a random speed.
Now imagine there's a bird flying inside the train. Does the bird need to fly forward by itself to keep up with the train, or would it automatically move with it if it were just levitating (flying in one place)?
How does that change if the train isn't isolated?
- oubaasLv 74 years agoFavorite Answer
If the train is isolated (closed windows), the the air inside the train is stationary seen by the train ...so the bird just needs levitating ...
If the train isn't isolated (open windows), the the air inside the train isn't stationary seen by the train ...so the bird needs flying against the air which is moving against him at the same speed the train il moving seen by the ground ...
- 4 years ago
Depends on whether the train is moving randomly forward or randomly in reverse I guess.