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学生对机动车功率的运算常会出现一些问题,归纳起来有如下两点:一是学生对机动车在某段时间内做什么运动?遵循什么规律搞不清楚。二是机动车功率在某段时间内是个恒值还是个变值?功率的变化受哪些因素的影响弄不明白。因此而出现错解乱解机动车功率的现象。本文特对此类问题作点分析。在机动车的铭牌上标有一个功率数值,这就是机动车发动机的输出功率。是指机动车在正常工作时,最大安全功率,常叫做
Students often have problems with the calculation of the power of motor vehicles. They are summarized as follows: First, students do what the motor vehicle does during a certain period of time, and what rules it follows are unclear. The second is whether the power of a motor vehicle is a constant value or a variable value in a certain period of time. It is unclear which factors influence the change of power. As a result, the phenomenon of misunderstanding the power of the motor vehicle is erroneously solved. This article specifically analyzes such issues. The motor vehicle’s nameplate is marked with a power value, which is the output power of the motor vehicle engine. It refers to the maximum safe power of a motor vehicle when it is working normally. It is often called