like a good read
 

http://www.bridger.us/2002/12/16/Cra...operVsFordF150

Something as big, and intimidating as an Fseries truck can cop that much damage at a 40kph impact??

Size doesn't matter, then??

40 MPH Mate, not Kilometres. Its about 76 kays an hour or so.

Sorry, my mistake, but the difference in damage between the two is interesting!

holy crap, 76km/h isnt that fast, and i would imagine alot of accidents would happen around that speed. yank crap

And in the sidebar "Jeep Liberty Unsafe at any speed" looks like a real authoritative source... I'd read the article content if I was the least bit interested or believing in it. All are free to make up their own minds.

Ok so let the mini and the Ftruck have a head on at 40 mph and the Ftruck will obliterate the mini! The mini will go under the Ftruck . BUut I still think the Ftruck needs to be rengineered!

Truck looks fine to me. Its population control for the United States. Its the only way they can bring the Redneck populations down, that and sending them to Iraq.

Force = Mass x Acceleration (or in this case the deccelration of the vehicles) clearly the F truck will weigh a lot more than the mini, be subject to more force (newton metres) hence it being damaged worse.