The tokens live in preview/films/_lib/motion.js, and this page reads them from there, so the plots below are the curves the films use. They are tuned for 24 frames a second: at that rate a curve that covers most of its travel in the first frame reads as a pop.
Curves
Springs
Three rules that come with them
Duration grows with distance
An element takes 0.25 s plus 0.6 ms a pixel, 6 to 24 frames. The camera takes 0.35 s plus 1.35 ms a pixel, 0.6 to 2.4 s. Always whole frames.
A speed ceiling
No move faster than 96 px a frame, so motion blur stays blur and never streaks. Whips are the exception: they cut at full speed.
Contrast in speed
In a scene, the slowest move takes at least three times as long as the fastest. Otherwise nothing reads as the important move.
Transitions
A seam is designed, never a cross-fade. The key element of one scene becomes the key element of the next, at the same speed: accelerate out, cut at peak speed, slow into place. Each demo below is the Pipelinq contact-centre film with one hand-off forced to that transition.
The registry with each transition's timing, caption rule and sound is preview/films/_lib/transitions.js. Open any hand-off yourself in the transitions study.