discomikey Posted April 15, 2014 Share Posted April 15, 2014 if you hit an artic then it would be a slightly more than 60mph equivalent. like above though with equal momentum and mass, the maximum speed is halved. so its the same as hitting a wall at 60 NOT 120. mythbusters did it a while back too Quote Link to comment Share on other sites More sharing options...
mad_pete Posted April 16, 2014 Share Posted April 16, 2014 Yes if hit something that was massive enough not to slow you I think that would be 60 to -60 so that would be 120mph. Quote Link to comment Share on other sites More sharing options...
trafman Posted April 16, 2014 Share Posted April 16, 2014 Not wanting to get this off topic so lets just accept its 60mph of grief in one vehicle and 60mph of grief in the other that makes 120 mph worth of grief which what I was trying to get across( not impact speed) but I accept where the debate on what the impact speed works out at. Far far too many variables the masses are rarely exactly equal and they dont hit exactly at the same point height angle etc. Trafman Quote Link to comment Share on other sites More sharing options...
gazelle Posted April 16, 2014 Share Posted April 16, 2014 So this https://www.youtube.com/watch?v=tVFdoBEoqMw would not be allowed in the UK then? Quote Link to comment Share on other sites More sharing options...
discomikey Posted April 16, 2014 Share Posted April 16, 2014 i know they do that kind of mad stuff out there all the time, like changing the tyre on a land cruiser whilst its going along on 2 wheels at highway speeds... but.. just... why??? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 16, 2014 Share Posted April 16, 2014 Not wanting to get this off topic so lets just accept its 60mph of grief in one vehicle and 60mph of grief in the other that makes 120 mph worth of grief which what I was trying to get across( not impact speed) but I accept where the debate on what the impact speed works out at. Far far too many variables the masses are rarely exactly equal and they dont hit exactly at the same point height angle etc. Trafman Wasn't trying to belittle the grief and injury involved in that sort of accident, I just found it a curious point of physics. Quote Link to comment Share on other sites More sharing options...
muddy Posted April 16, 2014 Share Posted April 16, 2014 but.. just... why??? Why not? If there's no one else around and your happy with the risk.... Quote Link to comment Share on other sites More sharing options...
Maverik Posted April 17, 2014 Share Posted April 17, 2014 When I was working in Dubai, I tell you its a scary place to drive at times when you've got antics like that going on around you, everyone drives like lunatics, especially the ex pats! Quote Link to comment Share on other sites More sharing options...
discomikey Posted April 17, 2014 Share Posted April 17, 2014 Why not? If there's no one else around and your happy with the risk.... but that was a fairly busy highway! haha Quote Link to comment Share on other sites More sharing options...
simonr Posted April 17, 2014 Share Posted April 17, 2014 Trafman - thank you for a good, informative post! On the physics question - In a Land Rover, hitting most other vehicles, it's probably closer to a 30mph collision due to relative mass and crumple zones in the other car! However, even a 30mph collision is about the same as falling 30 feet on to concrete - which is less than nice (I imagine). This equivalence always put the speed we travel at on the road into sharp perspective for me! Si 1 Quote Link to comment Share on other sites More sharing options...
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