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高中物理力学、电学、光学部分,速度的正交分解这一知识点常常“隐形”的渗透到不同运动方向的两个或多个连结体运动的情景中,或者运动物体的速度瞬间发生突变时的情景中.如果解题者稍有不慎,就会因不能辩识出或者不能正确的应用速度分解,而造成对整道题的解答错误.下面例举几道常出现速度分解的典型题例加以讨论分析,把握此知识点出现的规律性,以便灵活、准确的应用.
In the physical mechanics, electricity, and optics of high school, the knowledge of orthogonal decomposition of velocity often “invisibly” penetrates into the motion of two or more connected bodies in different directions of motion, or when the speed of a moving object suddenly mutates. In the scenario, if the solver is slightly careless, it will result in the wrong answer to the whole question because it cannot be identified or cannot be correctly applied to the velocity decomposition. Here are a few examples of typical problems with velocity decomposition. Cases to discuss and analyze, to grasp the regularity of this knowledge, in order to be flexible and accurate application.