I mean, that's the whole point of escape velocity, right?

我的意思是，这是逃逸速度的全部意义所在，不是吗？

youdao

Of course, you also get an acceleration here at this point, because there's also a change in velocity.

当然，在这一点，也有一个巨大的加速度，因为速度在这里也发生了变化。

youdao

And, that's the plane that contains the origin, the point, and the velocity vector.

并且这个平面包含了原点和动点，以及速度矢量。

youdao

So the velocity at any part of the curve is tangent to the curve at that point.

曲线上任意一点的速度,都在该点和曲线相切

耶鲁公开课 - 基础物理课程节选

That's the point where velocity is 0.

也就是速度为零的点

耶鲁公开课 - 基础物理课程节选

At any point on the graph you can take the derivative, which will be tangent to the curve at each point, and its numerical value will be what you can call the instantaneous velocity of that point and you can take the derivative over the derivative and call it the acceleration.

在图上的任意一点,你可以进行求导,得到曲线上每一点的切线斜率,所得到的数值,即为该点处的瞬时速度,然后你再求一次导,得出它的加速度

耶鲁公开课 - 基础物理课程节选

At some point when money velocity picks up gold will work out.

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To get to that point, he had to hold velocity steady and numbers of goods and services produced steady.

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The first step is simply for a player to note the time it takes for the ball to pass a fixed point to get a rough approximation of the velocity of the ball.

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