Well, first of all, you can't use relativistic and nonrelativistic vectors in the same equation.

，你就不能把四维矢量和非四维矢量用在同一个等式里。

Let's think about it a little bit.

这个矢量的大小。

And once again, in this video, these are vector quantities.

再强调一遍，这些量是矢量。

One thing I think you guys will really like is the collection vectors.

我想你们会很喜欢矢量图系列。

This is the opposite side to the angle.

蓝色矢量的长度是角的对边。

We are coming up with newer vector control methods. We are coming up with new drugs.

我们正在研究新的矢量控制方法。

Now this is after its traveled a little bit-- its new velocity

现这是 它的新速度矢量。

So let's see if we can do that.

下面来分解这个力矢量。

Animated videos like mine require hundreds of vectors to check difficult and time-consuming to make.

像我这样的动画要数以百百的矢量图来检查制作的难度和耗时。

Right over here that I'm kind of shading in blue.

力矢量也是 它也垂直于地球表面。

Now, given that, can we figure out this angle?

这里我们假设 黄色矢量是垂直于斜面的？

Forces are vectors, and so I have to add them up as vectors.

力是矢量， 所以我必须将它们加起来作为矢量。

To add vectors this way, you'd get this vector right here.

要以这种方式添加矢量， 您会在此处获得此矢量。

The only vectors which should be in free-body diagrams are force vectors.

自由体图中唯一应存在的矢量是力矢量。

The longer the arrow, the larger the magnitude of the vector.

箭头越长, 矢量的大小就越大。

It has that vector quality to it that I think of agency as.

它具有我所认为的代理的矢量品质。

So back to the question of what is a vector?

回到什么是矢量的问题上？

All of the representations of the vector b.

矢量 b 的所有表示。

Vector quantities also have a magnitude plus an extra piece of information, direction.

矢量也有一个大小加上一个额外的信息，方向。

To move in a different vector, force must be applied to counteract that momentum!

要以不同的矢量移动，必须施加力来抵消该动量！