分运动可以应用动能定理

The Kinetic Energy Theorem can be Applied in the Decomposed Motion

学生学完动能定理后，经常会对分运动应用动能定理求解，有些文章将学生的这种解法称为“动能定理的分量式”．有的文献认为动能定理没有分量式；有的文献认为在正交系中，动能定理可以有分量式．而笔者则认为，无论两个分运动的方向是否垂直，都可以在分运动中应用动能定理，只是称之为“动能定理的分量式”不太恰当．

After students learn the kinetic energy theorem, they often use the kinetic energy theorem to solve the problem in the decomposed motion. This method is called ＂component form of the kinetic energy theorem＇by some articles. This thesis insists that the kinetic energy theorem can be applied in the decomposed motion whether Orthogona[ system or not, but it is not appropriate to name it ＂component form of the kinetic energy theorem＂.