惯性是物理学中最基本的概念之一。关于惯性的概念，尽管学生在初中课本中已接触过，许多学生都能熟背惯性定义，也能举出一些惯性现象的实例，但并未真正确切理解惯性所表达的物理意义，因而时常产生一些错误认识。例如认为：“只有静止或做匀速直线运动的物体才有惯性”；“ Inertia is one of the most basic concepts in physics. With regard to the concept of inertia, although students have been exposed to junior high school textbooks, many students are familiar with inertial definitions and can give examples of inertial phenomena, but they do not really understand exactly the physical meaning expressed by inertia, and thus often arise. Some wrong understanding. For example, consider: “Only static or uniform linear motion of objects have inertia”;