一、重视理解“功”的含义功是物理学中的重要概念,物理学中的“功”不同于日常所说的“工作”、“做工”。日常劳动中出了力、用了脑,就可以说在“工作”、在“做工”。物理学中的“做功”却不是这样,有时用了力,却未做功。车陷进泥里,人用力推车,尽管累得筋疲力尽,只要车未动,就不能说人对车做了功。 First, pay attention to understanding the meaning of “power” is an important concept in physics, physics, “work” is different from the daily said “work ”, “work ”. The daily work out of force, with the brain, we can say “work ”, “work ”. Physics in the “work” is not the case, sometimes with the force, but did not do the work. Car stuck into the mud, hard-strolling people, though tired exhausted, as long as the car did not move, we can not say people made a car to work.