“直线运动”是高中物理的重要章节,是整个物理学的基础内容,涉及的基本概念较多,其中位移、速度和加速度,匀变速直线运动及其公式、图象等为重点知识.从加速度角度理解匀速直线运动、匀变速直线运动、非匀变速直线运动,分析加速度和速度的 “Linear Motion ” is an important chapter in physics of senior high school. It is the basic content of the whole physics. It involves more basic concepts. Among them, displacement, velocity and acceleration, uniform variable linear motion and its formulas and images are the key knowledge. From the acceleration point of view of uniform linear motion, uniform variable speed linear motion, non-uniform speed linear motion, analysis of acceleration and velocity