我来把更一般的形式，写出来吧，在一维空间中，位置和速度，作为时间函数的，一般形式，这里的加速度是一个常数。

I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.

youdao

一般情况下我不能这么写,因为这一项会包含pdV和，但是我们已经假定压强为常数，所以包含dp的部分等于零。

Normally I couldn't do that Vdp because this term would have p dV plus V dp, but we've specified the pressure is constant, so the dp part is zero.

youdao

在一般情况下，库仑定律是电荷的产物，和q2之间的距离就是半径r，q1q2，divided，by，their，separation，，which，is，r。,为了使最后算出的合理的静电单位和力学单位,我们需要在这儿引入一个常数。

So, in the most general form, Coulomb's law is the product of the charge, q1 And, in order to rationalize electrostatic units with mechanical units, we have to put a factor in here.

youdao