Well, I’ve found a partial answer. I now know that I need to use Impulse / Mass, and then to trace that visually, I need to multiply it by the amount of time over which I’m checking movement.
So if I want to trace the movement over the course of 0.05 seconds, I would multiply it by 0.05. Or should, except that through trial and error I’ve found that I actually need to multiply it by roughly 0.22 to accurately trace the movement over 0.05 seconds, and I have no idea why.
I’m not sure what math I would even use to arrive at a number like that accurately.