So I have a few of these kinds of things I've come up with over the years.
A standard train that's moving down the tracks in one direction always has a small percentage of it's mass moving in the opposite direction, no matter how fast the train is moving. This doesn't refer to parts of the train that are moving slower but still in the same direction, but to a portion of the train that is actually moving in the other direction relative to the ground.
True story?
A standard train that's moving down the tracks in one direction always has a small percentage of it's mass moving in the opposite direction, no matter how fast the train is moving. This doesn't refer to parts of the train that are moving slower but still in the same direction, but to a portion of the train that is actually moving in the other direction relative to the ground.
True story?