一、位移的符号《物理1》第一章“运动的描述”中用Δx表示位移,用x表示位置坐标,有Δx=x2-x1的关系式.这种表示方法把过程量“位移”和状态量“位置坐标”区分得非常清楚.而《物理1》的第二章“匀变速直线运动的研究”中,位移的符号却成了x,与“位置坐标”的符号一样.人为地造 First, the sign of displacement “Physics 1” in the first chapter “Description of the motion” in which the displacement is represented by Δx, and the position coordinate is represented by x, and there is a relational expression of Δx=x2-x1. This expression method “displaces” the process quantity and The state quantity “positional coordinates” is very clearly distinguished. In the second chapter of “Physics 1” “Study of uniform linear motion”, the sign of the displacement becomes x, which is the same as the sign of “positional coordinates”.