On 27/07/2018 16:27, NY wrote:
"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".

There is also the height, HGVs tend to go on top of cars and the crush
zones don't really work well when there is ten tonne on top of a car.