Ilyon saidSubsonicDesign saidYes, there is. But, it's strange, it doesn't work with CC Ball Action. When applying it makes Ball action layer invisible. I read this solution on creativecow.Isn’t there an effect called CC Force Motion Blur? I guess it could work out in your situation because it analyzes a few frames of animation and generates good looking motion blur. I don’t know if it’s very resource intensive but I think that you don’t have much choice…
You have to precompose the CC Ball Action layer first. CC Force Motion Blur only works on comps.
-f.