在近年的上海高考物理试卷中,出现了一种新题型,我们不妨叫它“纠错题”.这种题型对考查考生的能力,尤其是理解能力和分析能力是很有益处的.图1例1 .(2 0 0 3年高考上海卷第2 0题)如图1所示,一高度为h=0 .2m的水平面在A点处与一倾角为θ=3 0°的斜面连接,一小球以v0 =5m/s的速 In the recent Shanghai college entrance examination physics test paper, a new type of question has emerged. We might as well call it a “correction question.” This type of question is useful for examining examinee’s abilities, especially the ability to understand and analyze. Figure 1 Example 1 (2003 Shanghai Normal University Test Paper No. 20) As shown in Figure 1, a height of h = 0.2m in the horizontal plane at point A with an inclination of θ = 3 0 ° Connection, a ball with v0 = 5m/s speed