本文通过对牛顿第二定律中所涉及物理量的定义分析,得出力这个基本物理量定义的模糊性,进而对牛顿第二定律作为物理定律的作用提出了质疑,并提出将此物理定律理解为力的定义将更具逻辑严谨性,最后指出现行高中物理教材编排上的误区,为中学物理教学进行了科学的指导。 Through the definition and analysis of the physical quantities involved in the second law of Newton, this paper draws the ambiguity of the definition of the basic physical quantity of force, and then questions the role of Newton’s second law as a physical law and proposes that this physical law be understood as a force The definition will be more logical and rigorous. Finally, the author points out the mistakes on the current high school physics textbook layout and provides scientific guidance for physics teaching in middle school.