Xiao Ming ready cyclists travel from A to B, A with B to a distance of 4.5 km. A to B on the road to Xiao Ming, there are many bicycle owners, they are also riding a bicycle to go from A to B, and assume On the road from A to B, cycling speed is always fixed. Xiao Ming has a special habit, he always Others to ride with, so as not to be alone. In A and assume that Xiao Ming, he will wait on that one also to B Travel People, and then just on him, with him to the B to the same rate. If there are no people from A to B, so small That wait until someone from A to B, will be starting from A to follow him, went to B to In the travel The way, if there is a cycling speed than small and neat person from tomorrow around for more than, Xiao Ming will immediately accelerate to keep up with faster And ride with him to B to To ★ experimental tasks: Assume small to reach the A and the moment is 0 seconds, the speed and give you other travelers from point A moment, please Calculation Xiao Ming

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