打破运动学中的惯有思维--伽利略坐标系的选择优化

Breaking the habitual thought in kinematics--Optimization of Galileo coordinate system

面对运动学问题时,大多数同学会选取地面作为参考系。这样的方法普遍适用于运动学中的大多数问题。但是对于少数题型并不适用,比如多个物体发生相对运动的题型中,这样的方法反而会为解题增加难度,最典型的就是经典的传送带问题。

when facing kinematics problems, most students choose ground as the reference frame. This method is generally applicable to most problems in kinematics. However, this method is not suitable for a few problem types. For example, in the problem types where multiple objects are moving relatively, such method will increase the difficulty of solving the problem. The most typical problem is the classic conveyor belt problem.