在涉及功、功率、功和能、动能、动能定理五节内容的习题中有一类是讨论汽车起动过程的问题。这是一个复杂的问题,尤其是起动过程中所受的阻力是变力,为了简化,高中阶段常设汽车所受阻力是恒力。汽车起动问题一般可分为两种情形:一种是汽车在平直路面上的起动;另一种是汽车在斜坡上的起动。 In the exercises dealing with the five sections of work, power, work and energy, kinetic energy, and kinetic energy theorems, there is a class that discusses the problems of the car startup process. This is a complicated issue, and in particular, the resistance to start-up is invariable. For the sake of simplification, the resistance to standing vehicles in high school is constant force. The problem of automobile starting can generally be divided into two situations: one is the start of the car on a straight road; the other is the start of the car on a slope.