Extending upon the above concept, you can in theory use it for physics object but your results may vary on some factors. After overlap do a check to see if the overlapping actor is simulating physics or not. If Simulating (TRUE) then multiply linear and angular velocity by a small number e.g. 0.1 and on end overlap again multiply the velocities by the inverse of the previous number e.g. 1/0/1=10 This solution will work on most cases but if you apply any kind of force inside the bubble it will make it bullet speed 
here is a video where I implemented a similar concept ReExistence Abilities Demo [UE4 Project] [Work in Progress]
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