Can I change the reference frame to calculated kinetic energy?

Hi Everyone,

I have a question about kinetic energy. This is calculated in relation to the global reference frame. Can I change it? I have four cylinders, and I need particle energy in each cylinder relative to the axis of that cylinder (picture - four points). 

One more question about collisions' energy: which parameter best describes it?

I will be very grateful for any help.

Best regards 

Iwona