And I can therefore calculate S and what the velocity So what is the velocity in the x direction at point s?

然后我可以推测出,点在x轴方向的速度，what，the，velocity,在y轴方向的速度,那么在S点的x轴方向的速度,是多少呢？

youdao

Second... Newton's Second Law: ma this is the only force in the x direction.

根据牛顿第二定理：,等于。，ma，equals。。。,这是x方向的,唯一一个力。

youdao

There is no acceleration in the y direction, only in x direction when it starts moving, and that's why we split it.

在y方向上没有加速度，只有在x方向上移动时才有，这就是分解它的原因。

youdao

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