So that’s the basics of how collisions work, and how they relate to the momentum of motion in a straight line.

这就是碰撞如何工作的基础知识， 以及它们如何与直线运动的动量相关。

So that's the basics of how collisions work, and how they relate to the momentum of motion in a straight line.

这些是碰撞的基础知识， 以及它们与直线运动的关系。