2010-01-29 22:01:56 +0000 #1
(1) if they stood 100 meters at the same time opposite starting at both ends of the runway, then the two men met after a few seconds ? (2) If Xiao Ming stood at 100 meters from the runway, Xiao-bin stands 10 meters in front of him, both for the same time to start, after a few seconds to keep up with Xiao-Ming Xiao-bin?
answer process plus the answer
answer process plus the answer