在初二物理的学习中 ,很多同学对惯性与惯性定律的学习感到困难 ,原因是把两物理概念混为一谈 ,不加区别所致。现对两物理概念分析如下 :一、惯性定律又叫牛顿第一定律 ,它指 :“一切物体在没有受到外力作用的时候 ,总保持匀速直线运动状态或静止状态。”这条定律说明两个问题 During the second year of physics study, many students were having difficulty learning the laws of inertia and inertia because the two physical concepts were confused and indistinguishable. The two physical concepts are now analyzed as follows: 1. The Law of Inertia is also called Newton’s first law. It means: “All objects shall always maintain a uniform linear motion or a stationary state when they are not subjected to external forces.” This law states that two problem