通过《自然哲学之数学原理》 (下文均用"《原理》"表示) 中的"定义1""定义2"和"定律Ⅱ", 从动量的角度对牛顿第二定律的内容及表达式所体现出的内涵进行再讨论, 进一步加深对牛顿第二定律的理解与认识, 提升学生核心素养中物理观念和物理思维的认识水平.%Have a discussion about the Newton′s Second Law′s content and connotation once again by using the law′s momentum statement through the " Definition 1", " Definition 2" and " Law Ⅱ" which in the book " Mathematical Principles of Natural Philosophy" (hereafter termed " Principles").It can not only further deepen the comprehension and the cognition of the Newton′s Second Law but also improve the levels of physics concepts and physics thoughts on the key competence.
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