No Subject

["Smith, Kirby A" <kirby.a.smith@lmco.com>]

 "DRoxburgh" <DRoxburgh@email.msn.com> wrote in part:

" The thing to remember on German roads, is that if you are travelling at
120mph, and a
brit with a caravan doing 50 pulls out in front of you, it is the equivalent
of stopping dead from 70mph."

Not exactly!  Although the momentum change is the same, the kinetic energy
that has to be absorbed, mostly by the brakes, is proprotional to the
velocity squared.  Thus, the former case is 2.4 times worse.

                .... Kirby   (Kirby A. Smith)
                              2 x 1988 90q
                          New Hampshire USA