2007年全国高考理综(Ⅱ)第16题考查了a、b两物块到达最低点S的时间和动量两个物理量,大多数考生很容易分析出物块a、b在S点的动量是不相等的(大小相等但方向不同),但对物块a、b到达S点的时间分析判断有一定困难,致使部分考生解答错误.那么如何破解该题呢?本人认为破解该题要先 In 2007, the 16th National College Entrance Examination (II) examined the time and momentum of the a and b blocks to the lowest point S. The majority of candidates were able to analyze the momentum of the blocks a and b at S. Not equal (the same size but different direction), but the time to reach the S point of the block a, b analysis and judgment have some difficulties, resulting in some candidates answer the wrong. So how to solve the problem? I think it is necessary to crack the problem