I increased the kinetic energy.
我增加了动能。
So the kinetic energy went down.
动能减小了。
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？
Who thinks the kinetic energy has decreased?
谁认为动能减小了？
Who thinks the kinetic energy has not changed?
谁认为动能保持不变？
And who thinks the kinetic energy has increased?
谁认为动能增加了？
The first thing I do, I increase the kinetic energy.
要做的第一件事，实增加动能。
I can destroy the kinetic energy completely if I want that.
我可以耗尽动能，如果我想的话。
So this is the kinetic energy and this is the potential energy.
因此这是动能，这是势能。
All the kinetic energy is in the tennis ball; nothing is in the wall.
也就是网球的动能，墙壁没有动能。
Now, the kinetic energy and the momentum depend on your reference frame.
那么动能和动量，取决于你的参考系。
Now I wonder, what is the kinetic energy of the Earth in orbit around the sun?
我想知道地球绕太阳，公转的动能是多少？
What do you think the situation is with the kinetic energy after the collision?
你认为是什么情况，碰撞后的动能怎样？
The kinetic energy and velocity decreases with the increase in the ceramics layers.
随着陶瓷层数的增多，弹体的速度和动能下降速率逐渐变小。
Only decreasing the areas of major tuyeres will increase the kinetic energy of every tuyere.
只有减小多个风口的面积，才会增大所有风口的鼓风动能。
Well, the kinetic energy is minus energy is U, and so this is... +1/2U this is plus one-half U.
动能为,势能为U，所以这是。,这是。
The results show that the kinetic energy in the impeller region is higher than in the bulk flow.
结果表明：湍动能分布不均匀，在叶轮区较高，而在主体区较小；
So the kinetic energy has increased; the potential energy is the same, so the total energy is up.
所以动能增加，势能不变，所以总能量增加。
This is the kinetic energy for something in orbit at this radius, and this is the potential energy.
这是在轨道内这个，半径的物体的动能，这是势能。
The kinetic energy is the fast part of swinging; it's the speed you have as you rush back and forth.
动能是你荡秋千时的速度，即你向前或向后运动时的快慢。
The kinetic energy from this movement is harvested to deliver charge at the same rate as a wall charger.
发电机利用这一运动过程中产生的动能来充电，充电速度跟壁式充电器一样。
The piston converts the potential energy of the fuel into the kinetic energy that turns the crankshaft.
活塞把燃料的潜在能量转化成为动能，其将会转动曲轴。
This results in braking force , and the power recovered from the kinetic energy is fed back to the battery.
这在制动力的结果，收回的权力从动能反馈给电池。
Our ionization energy is going to be equal to the incident energy coming in, minus the kinetic energy of the electron.
我们的电离能将等于，入射能量，减去电子的动能。
And what we have left over is this amount of energy here, which is going to be the kinetic energy of the ejected electron.
都用来发射它，剩下的这些就是，出射电子的动能。
So what, now, is then the total -- energy of the system-- that is, the sum of the kinetic energy plus the potential energy?
所以现在系统内,总能量是多少-,是动能和,势能之和吗？
So we now have a way of calculating the kinetic energy of rotation provided that we know how to calculate the moment of inertia.
现在我们有一个计算，旋转动能的方法，如果我们知道，怎样计算转动惯量。
So we now have a way of calculating the kinetic energy of rotation provided that we know how to calculate the moment of inertia.
现在我们有一个计算，旋转动能的方法，如果我们知道，怎样计算转动惯量。
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