“运动和力”中有些内容比较抽象,在学习过程中容易产生一些易混淆的问题,从而导致一些错误的认识.只有揭示这些容易混淆的问题,才能全面准确地掌握知识,增强灵活运用物理知识的能力.一、平均速度与速度平均平均速度是用来表示物体做变速直线运 Some of the contents of “Exercise and Force” are rather abstract, and some confusing problems tend to occur during the learning process, leading to some erroneous understanding. Only revealing these easily confused questions can we fully and accurately grasp the knowledge and enhance the flexibility to use The ability of physical knowledge.A average speed and speed Average average speed is used to express the object to do linear transformation