e=mv^2 was just being used illustrate the amount of energy that needs to be dissapated under the two different braking situations. Made perfect sense and it does have value.
2008 E92 M3 Jerez Black,DCT,Fox Red ext,Prem,Tech,19", ipod/usb, CF roof and trim
2010 E91 328i Space Gray,Black int, M sport, most options
2007 Montego Blue 335i (retired)