1　内驱动作用系统的“自我做功”现象[问题 ]静止在水平地面上的汽车突然加速运行 ,运行距离s后获得动能Ek,设汽车运行中各种阻力恒为 f ,问在此过程中汽车做了多少功 ?析与解 :利用功能原理很容易求得结果为Ek+fs.解答过程撇开了具体是什么力通过什么方式做功的细节 ,从能的 1 “Self-doing” phenomenon of the inner drive system [Question] The car on the horizontal ground suddenly accelerates, the kinetic energy Ek is obtained after the distance s, and the various resistances during the running of the car are constant as f. How much work has been done? Analysis and solution: Using functional principles, it is easy to find the result as Ek+fs. The answer process has opened up the specific details of what forces are used to do the work.