Paul, I actually tried that exact experiment on a bullet train and suceeded in cathing the ball. It was on a Transrapid Maglev Train in Shanghai and I was on my way back to the airport with the train going at a velocity of well over 200 miles per hour. When I arrived ay my destination, a witness to my ball experiment told me that I was a very good ball catcher and should apply for a position on a National Baseball League team. I agreed with him, said he was telling the truth, and applied with the Boston Red Sox. But he also told me that throwing the ball up in the air and catching it on a fast-moving train was proof that the railroad tracks were moving at over 200 miles per hour. I told him, "The Track is NOT Moving!", called him a liar and left. Bernie Paul Deema <paul_deema@xxxxxxxxxxx> wrote: Bernie B Have you ever taken a trip in a railway carriage at about 100 km/h? If not, then no doubt you have been in a moving vehicle of some description at some time in your life and are possessed of some ability to imagine the railway carriage journey described. If you were in such a carriage, seated in the middle of the carriage facing the rear of the train and travelling at 100 k/mh, if you were to throw a ball into the air -- say half-way to the ceiling -- with the intention of catching it when it descends, would you succeed, or are you of the opinion that the ball would fly to the rear end of the carriage to bounce off the rear end wall? Points will be awarded if you append your reasoning. Paul D --------------------------------- Yahoo!7 Mail has just got even bigger and better with unlimited storage on all webmail accounts. Find out more. --------------------------------- Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.