"mechanic" wrote in message
...
On Fri, 27 Jul 2018 09:23:56 +0100, Martin Brown wrote:

The other thing to remember is that damage scales as the square of the
mass ratio which is why you should never pick a fight with an HGV.

Another suspect statement.

If damage is proportional to energy dissipated, then kinetic energy is 1/2 m
v(^2), so proportional to mass but proportional to square of speed.

But I agree with "you should never pick a fight with an HGV".