解决物理问题,归根结底是物理方法问题.教学中发现,尽管教材专门讲述了“力的分解”和“运动的分解”,学生对力的分解及平抛运动的处理方法也基本掌握,但遇到具体问题,需要分解其他矢量或分解其他运动形式时,有时仍显得无所适从.笔者认为,产生这样的原因,是由于思维方式只停留在局部空间,没有真正领悟到“分解”原理的精髓.本文通过例题剖析“分解”的思想,供参考.一、分解矢量巧解题中学物理中涉及的矢量较多,如力、速度、加速度、电场强度、磁感应强度等.遇到具体问题时,通过分解 Solving physics problems is, in the final analysis, a matter of physical methods. Although teaching materials specifically describe the “disintegration of forces” and “the decomposition of movements”, students find that the decomposition of forces and the handling methods of throwing motions are basically grasped. The specific problem, when it is necessary to decompose other vectors or decompose other forms of movement, sometimes seems incomprehensible. The author believes that the reason for this is that the way of thinking only stays in the local space and does not really comprehend the essence of the “decomposition” principle. Examples of analysis of the “decomposition” of the idea for reference. First, the decomposition of the vector problem solving problems in secondary school physics involved more vector, such as force, speed, acceleration, electric field strength, magnetic induction, etc. When encountered specific problems, through the decomposition