惯性是初中物理教学中的一个难点,学习的时候学生容易把概念背熟,但用惯性解释实际问题时,就会犯经验性的错误,为了让学生正确理解惯性,教师在复习中应注意以下几点:一、惯性的本质惯性的本质是物体保持原有的运动状态不变的性质(粗浅解释),所以必须认清物体原有的运动状态。以小球为例,木片被弹出去之前,小球处于静止状态。小球由于有惯性,还应保持原有的静止状态,所以小球落在原处。简言之,物体原来是什么状态,由 Inertia is a difficult point in junior high school physics teaching. When learning, students are easy to memorize concepts. However, when inertia explains practical problems, they make mistakes in experience. In order to make students understand inertia correctly, teachers should pay attention to the following A few points: First, the essence of inertia The essence of inertia is the nature of the object to maintain the same state of the original movement (superficial explanation), it must recognize the original state of motion of the object. In the case of a pellet, the pellet is at rest before it is ejected. Small ball due to inertia, but also to maintain the original quiescent state, so the ball fell in place. In short, what is the state of the object, by