在普通高中课程标准实验教科书物理必修2(人民教育出版社)第5章“曲线运动”的第6节“向心加速度”中,有“做一做”环节,其中插图笔者认为做以下的修改更为恰当,与编者及同行探讨.现将课本18页的图5.6-3(如图1所示)质点从A运动到B的速度变化量和课本中推导过程叙述如下:“我们 There is a “do one thing” link in Section 6 “Centripetal Acceleration” in Chapter 5 of “Curved Movement” of the General High School Curriculum Standard Experimental Textbook Physics Compulsory 2 (People’s Education Press), in which the author thinks the following modifications More appropriate, with editors and peers to explore Now textbook Figure 5.6-3 18 (Figure 1) The particle velocity from A to B and the textbook in the rate of change is described as follows: "We