So, that's -- does anyone know which classical law of motion that would be?

你们有谁知道这是,哪个经典运动定律吗？

麻省理工公开课 - 化学原理课程节选

I will draw the famous picture of some particle moving and it's here at t of some value of x.

我会画某个质点运动的,经典图像,这是某个x值对应的时间t

耶鲁公开课 - 基础物理课程节选