一个运动着的物体,由于周围环境对它的阻碍作用,它最后会达到某一恒定速度做匀速运动,这个恒定速度通常叫做收尾速度。收尾速度问题是一类比较常见的问题,也是一类非常典型的运用牛顿第二定律分析运动物体动态变化过程的问题,恰恰也是学生感觉比较困难的问题。其根本原因是学生 A moving object, due to the surrounding environment’s hindrance to it, will eventually reach a certain constant speed and do a uniform motion. This constant speed is usually called the finishing speed. The ending speed problem is a relatively common problem, and it is also a very typical problem of using Newton’s second law to analyze the dynamic process of moving objects. It is also a problem that students feel more difficult. The root cause is students