动能的势能统称为机械能,对机械能的正确认识要注意以下几个方面: 一、正确理解能与功的关系:能量概念与功的概念有密切的联系,能量表示物体做功本领的大小,功是能量变化的量度。 The potential energy of kinetic energy is collectively referred to as mechanical energy. The correct understanding of mechanical energy should pay attention to the following aspects: 1. Correct understanding of the relationship between energy and work: The concept of energy is closely related to the concept of work. The energy represents the size of an object’s ability to do work. A measure of energy change.