加速度是一个桥梁,联系着物体受力与运动,对加速度概念的准确理解、对加速度与速度关系的清晰认识,都直接影响着物理学习的效率。加速度不仅是一个重要物理量,同时也是一个较难掌握的物理量,初学者往往错误百出。笔者在此将这些错误进行了归类讲解,希望对大家理解加速度能起一定的帮助作用。第一类对加速度正负号的理解误区 Acceleration is a bridge, which is connected with the force and movement of objects. The accurate understanding of the concept of acceleration and the clear understanding of the relationship between acceleration and speed all directly affect the efficiency of physics learning. Acceleration is not only an important physical quantity, but also a more difficult to grasp the physical quantity, beginners often mistakes. I will classify these mistakes in this explanation, I hope we can understand the acceleration can play a helping role. The first misunderstanding of the sign of acceleration