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众所周知,利用函数图象能够直观地表示物理量之间的相互依赖关系,形象地表述物理规律,增加视觉感知。在解决具体物理问题时,运用函数图象常能使一些复杂的问题变得直观明瞭,变“抽象”为“形象”。有时能够起到比解析法更巧妙、简便的独特效果,这对提高学生的分析问题能力无疑是颇有裨益的。本文只准备通过几个具体例题的分析谈谈 v-t 图象在解决力学问题时所起的重要作用。
As we all know, the use of functional images can intuitively represent the interdependencies between physical quantities, visually describe physical laws, and increase visual perception. When solving specific physical problems, the use of function images can often make some complex problems become intuitive and changeable to “abstract” as “image”. Sometimes it is able to play a more subtle and simple unique effect than the analytical method, which is undoubtedly beneficial to improve students’ ability to analyze problems. This article only intends to discuss the important role of v-t images in solving mechanical problems through the analysis of several concrete examples.