A train leaves Chicago traveling at 60 mph while another train leaves Los Angeles twenty minutes later traveling at a rate of 85 mph. Draw a picture of how you will feel when the trains finally pass each other.
You are assuming the train leaving Chicago was headed west. Let's assume the Chicago train is heading east to NYC. Figure out if the LA train can catch up to the Chicago train, and if not why not? Ooops, I forgot, the LA train was taking the southern route via El Paso, Houston, New Orleans, Atlanta, then on to Philly where it terminates. Unless, however, it meets a westbound train near Houston on the SAME track. Then, I think both these trains terminate at the point of impact and well as a number of the passengers.