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题当你背对着路灯向前匀速行走时,定量分析你的身影长度的变化规律.分析这是一道定量分析的问题,应首先根据光的直线传播原理作图,确定与人的身影长度有关的物理量,并分析那些物理量是不变
When you walk back to the street light and walk at a constant speed, quantitative analysis of the length of your figure changes the law. Analysis of this is a quantitative analysis of the problem, should first be based on the principle of linear propagation of light to determine the length of the person’s figure The physical quantities and analyze those physical quantities are unchanged