The object is here and it starts going in this direction.
物体在这里,然后出发,沿着这个方向运动。
Here is what it looks like, showing direction of the scrolling marquee (red arrow).
下面是其显示效果,其中显示滚动字幕的方向(红色箭头)。
"Come with me," she responded. "I don't know the street or number very well; it is in quite the other direction from here, but I know the house well, I will take you to it."
“您跟我来,”她回答,“是什么街,几号,我都不清楚,那完全是另一个地方,不靠这边,但是我认得那栋房子,我领您去。”
This particle is constantly changing its direction, but it therefore has an acceleration and the acceleration, we have shown here, is pointing towards the center.
这个质点恒定地改变它的运动方向,因此它具有加速度,而且这个加速度,我们前面也讲过了,指向圆心
Infinity is the force when we're thinking about it and our brains, negative infinity is when we actually plug it into the equation here, and the reason is the convention that the negative sign is just telling us the direction that the force is coming together instead of pushing apart.
说力有多大时,我们想到的,是无穷大,而方程解出来的,是负无穷,这是因为习惯上,我们用负号表示力的方向,是相互吸引而不是相互排斥的,所以我们可以用库仑定律。
应用推荐