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在现代物理学中,能量和动量上升为基本概念。它们反映了物质运动不同方面的基本特征,但同时彼此又有紧密的联系。对同一物体系统而言,可同时具备两个物理概念:动量mv与动能1/2 mv~2。它们有明显的联系:它们都是与物体本身质量(m)和运动状态速度(v)有关的物理量;其次,它们都可以描述机械运动的强弱程度。这也正是提出这两个概念的物理基础。
In modern physics, energy and momentum rise as the basic concept. They reflect the basic characteristics of different aspects of the movement of matter, but at the same time are intimately connected with each other. For the same object system, there are two physical concepts at the same time: momentum mv and kinetic energy 1/2 mv ~ 2. They are clearly linked: they are all physical quantities that are related to the mass of the object itself (m) and to the speed of the moving state (v); second, they all describe the degree of mechanical motion. This is also the physical basis for putting forward these two concepts.