匀变速直线运动是在位移、速度、加速度等概念的基础上研究的一种最基本最简单的变速运动,包括速度时间关系和位移时间关系。这一章题目常可一题多解,解题时要注意多积累、多发现,图像法、比例法、逆向转换法等都是常用的方法。 Even speed change Linear motion is a basic and simple variable speed movement studied on the basis of the concepts of displacement, speed and acceleration, including the relationship between speed time and displacement time. This chapter title often more than one solution, the problem should pay attention to more accumulation, more discovery, image method, the ratio method, reverse conversion method are all commonly used methods.