动能将会增加。
动能是守恒的。
So the kinetic energy went down.
动能减小了。
之后它就有了动能。
Friction can remove kinetic energy.
摩擦力可以转移动能。
Friction must take kinetic energy out.
摩擦力一定抵消动能。
There was no kinetic energy before...
碰撞前没有动能。
The kinetic energy of the liquid is easy.
液体的动能很简单。
What now is the kinetic energy afterwards?
碰撞后动能是多少？
It has a certain amount of kinetic energy.
它有一定量的动能。
Kinetic energy was almost exclusively lost.
几乎没有动能。
Well, kinetic energy has clearly increased.
动能定然增加了。
So, that was frequency with kinetic energy.
这是频率和动能。
So there was a certain amount of kinetic energy.
因此，这里有一定量的动能。
You lose kinetic energy and that goes into heat.
失去动能，转化为热量。
Kinetic energy before; kinetic energy afterwards.
之前的动能，之后的动能。
What is your kinetic energy when you reach point p?
所以到达点P时的，动能是多少？
The first thing I do, I increase the kinetic energy.
要做的第一件事，实增加动能。
A lot of heat is produced, kinetic energy is removed.
产生许多热能，动能被转移。
It must have momentum, and yet it has no kinetic energy.
它一定有动量，但它却没有动能。
Kinetic energy and momentum is a totally different thing.
动能和动量，是完全不同的概念。
That means the sum of potential energy and kinetic energy.
总功指的是势能,和动能的总和。
I can destroy the kinetic energy completely if I want that.
我可以耗尽动能，如果我想的话。
Notice that not all mechanical energy is kinetic energy.
要注意，并非所有的机械能都是动能。
The sum of kinetic energy and potential energy doesn't change.
动能和势能，总和没有改变。
So this is the kinetic energy and this is the potential energy.
因此这是动能，这是势能。
This one now has kinetic energy and this one has kinetic energy.
现在它具有了动能，这个也有了动能。
If I let it fall, then that will be converted to kinetic energy.
如果我让它落下，那么势能会转化为，动能。
An object is said to possess kinetic energy if it if moving.
如果一个物体在运动，就可以说它有了动能。(进行时)。
Movement produces kinetic energy, which can be converted into power.
移动产生热动能，这些可以转化成电能。
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