[Cory May]

Thanks Dan, I’m pretty new to this. This is the inertia expression and I just use a basic wiggle(x,x) expression. I may be going about this all wrong perhaps?

amp = 5.0; freq = 2.0; decay = 4.0;

n = 0;
if (numKeys > 0) {
n = nearestKey(time).index;
if (key(n).time > time) { n--; }
}
if (n == 0) { t = 0; }
else { t = time - key(n).time; }
if (n > 0 && t < 1) {
v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
value + v*(amp/100)*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}
else { value; }