i take that back...
Two trains leave at 9:00 A.M. One leaves from NY heading West and the other from LA heading East. The train from LA is carrying 200,000 tons of steel while the one from NY is carrying 200,000 tons of feathers. Assuming that neither train encounters any significant wind resistance, no delays, are traveling on perfectly conditioned tracks and are both allowed to travel at maximum speed for the entire duration of their trips. Which train left first?