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Re: This Week's Finds in Mathematical Physics (Week 140)
Posted:
Oct 25, 1999 5:37 PM


In article <barnabyfinch2210991703210001@c1p130.idl.pe.net>, Barnaby Finch <barnabyfinch@pe.net> writes >In article <7updac$d0r$1@info.service.rug.nl>, p.helbig@jb.man.ac.uk wrote: > >> The problem being: Two trains are 60 miles apart and approaching each >> other at 30 miles per hour. There is a fly flying between the >> cowcatchers of each train, at 60 miles per hour, back and forth, turning >> around immediately. What is the total distance covered by the fly >> (relative to the ground, NOT taking the motion in opposite directions to >> cancel) until the trains hit? > >60 miles? > >Barnaby > >[Moderator's note: Further discussion of this puzzle doesn't belong on >sci.physics.research, unless some additional physics content can be >injected. I would suggest that the thread be redirected to >rec.puzzles, but I think that bringing up an old chestnut like this >there would elicit some flames. TB]
60/30 = 2 hours @ 60mph = 120 miles.
 Jeremy Boden



