On Fri, 18 Sep 2009 12:21:42 +0100, The Natural Philosopher wrote:

'how much kinetic energy does a car travelling at 70mph have' 'kinetic
energy with respect to what? Kineti9c energy is a function of the
vectors sums of *oow* velocities..' 'energy is a scalar, so it doesn't
matter'

And no doubt forgetting that if you know exactly how much energy the car
has, you will not be able to determine exactly where the car is located