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学生在刚开始学习物理时,往往不能对物理问题进行正确的分析,对运动和力的关系不能准确地把握,如在运用牛顿第二定律和运动学公式解决问题时,常表现用矢量公式计算时出现正、负号的错误,误以为物体受到什么方向的合力,则物体就向那个方向运动.本文通过对学生在解以下几道典型例
When students first begin to study physics, they often cannot correctly analyze physical problems, and cannot accurately grasp the relationship between movement and force. For example, when using Newton’s second law and kinematics formulas to solve problems, they often use vector formulas. When a positive or negative error occurs, mistakenly seeing what direction the object is put together, the object moves in that direction. This article passes through the following typical examples of students