Originally posted by: RaynorWolfcastle
Originally posted by: beatle
Weight makes less of a difference at higher speeds. It's the poor aerodynamics of the truck that hurt it at high speeds.
False.
From a car point of view a[net] = (F[engine] - F[drag]) / m. So mass is equally important at all speeds but as you increase speeds F[drag] becomes increasingly close to F[engine]
(yes, I realize this is a very simple model of what is happening).