1问题的提出笔者在教学“万有引力定律”一章内容时,有学生王某在课后问我一个问题:“老师,我在一本科普杂志中看到说‘地球卫星受到空气等阻力后动能不仅不减少,反而会增加’,您觉得这个结论对吗?”我反问他:“对这个问题,你自己是怎么想的?说说你的看法?”王同学整理了一下思 1Proposing the Question When the author taught the chapter “Theory of Gravitation”, a student Wang asked me a question after class: “Teacher, I saw in an undergraduate magazine that the Earth’s satellites were subjected to kinetic energy such as air resistance. Not only does it not reduce, but it will increase’, do you think this is correct?” I asked him: “What did you think about this issue? Tell your opinion?”