Also, how is each bat supported? Support forces will play a dramatic role. If the non-moving bat is secured at the base there would be shear and bending forces acting on the bat that would not exist if the moving bat hit an unsupported bat in a weightless environment. Tony also brings up good points. The problem with 'pure' physics is that things get hairy quickly once little 'real world' issues like these come into play. That's why there are engineers.

That being said, if you can prove Mr. Newton incorrect, I'd say you have a very bright future.

Best,
-Zeke