work-energy theorem 功能原理 ; 功能定律
Work-kinetic Energy Theorem 功 ; 功动能定理
Theorem of work and energy 功能原理
Work-mechanical energy theorem 功能原理
work-energy theorem for system 系统的动能定理
You get exactly the same result, and I find this somehow more pleasing to use the work-energy theorem.
会得到完全相同的答案，我觉得用功能定理，会更加的简洁。
I would say, "Hey, why not apply the work-energy theorem?"
我会说，为什么不用，功能定理？
It turns kinetic energy into heat, and that is perfectly fine in the work-energy theorem.
可以把动能转为热量，这点在功能定理，中是非常好的。
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