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动能定理是高中物理学中的一个重要定理,它的具体应用学生学习物理时要必须掌握的,下面就动能定理的具体应用谈一点个人的看法。动能定理:物体受到的合力做功,等于物体动能的改变量。合外力对物体做正功,物体的动能就增加,物体动能的增加量等于合外力对物体所做的功。合外力对物体做负功,物体的动能就减小,物体动能的减少量等于物体克服合外力所做的功。当物体受到的各个力均为恒力时,且每个力都自
Kinetic energy theorem is an important theorem in high school physics. Its concrete application must be mastered by students when learning physics. The following is a brief introduction to the concrete application of kinetic energy theorem. Kinetic energy theorem: The resultant force of the body is equal to the change of the kinetic energy of the object. Together with external forces to do positive work, the kinetic energy of the object increases, the increase of the kinetic energy of the object is equal to the work done by the external force. Together with external forces to do negative work, the object's kinetic energy is reduced, the reduction of kinetic energy is equal to the object to overcome the external power of the work done. When all the forces on the object are constant, and each force is self