老师教同学们做游戏：在一个周长为114米的圆形跑道上，两个同学从一条直径的两端同时出发沿圆周开始跑，1秒钟后他们都调头跑，再过3秒他们又调头跑，依次照1、3、5……分别都调头而跑，每秒两人分别跑
米和
米，那么经过几秒，他们初次相遇？
相关试题
老师教同学们做游戏：在一个周长为114米的圆形跑道上，两个同学从一条直径的两端同时出发沿圆周开始跑，1秒钟后他们都调头跑，再过3秒他们又调头跑，依次照1、3、5……分别都调头而跑，每秒两人分别跑米和米，那么经过几秒，他们初次相遇？
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