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“两个博尔特拉着你,能跑出5秒的百米成绩吗”这句调侃式的话帮助笔者解决了原本很难理解的运动合成中遇到的难题.大家都知道,当今世界飞人博尔特的百米最好成绩是9秒69.那么,如果有两个博尔特拉着你跑,你能跑出5秒的百米成绩吗?众所周知,这是不可能的.但是,在我们学习了运动的合成与分解这章知识后,学生就会想到这样的问题:如果两个博尔特拉着你跑,你就参与了两个博尔特的运动,那么两个博尔特
“Two Bolt pulled you, you can run out of 5 seconds of the hundred meters results?” The phrase ridiculous words help the author to solve the originally difficult to understand the movement of synthetic problems encountered.As we all know, today World trapeze Bolt’s best score is 9 seconds 69. So, if there are two Bolt pulled you run, you can run 5 seconds of 100 meters results? As we all know, this is impossible. However, after we have learned about the synthesis and decomposition of movement, students come to think of the problem: if two Bolt take you run, you participate in two Bolt sports, then two Bolt