...is traveling at 60 mph? Train B is traveling at 70 mph. Train A passes a station at 10:15 P.M. If train B passes the same station at 10:45 P.M., at what time will train B catch up?
23:45
But why?
And what happens if the tracks cross the stream?
What about the tunnels?
Where is the next station?
Do they travel with the rotation of the earth or against it?