On Mon, 18 Apr 2011 11:39:14 -0700, Darren New wrote:

> On 4/18/2011 10:43, Jim Henderson wrote:
>> On Mon, 18 Apr 2011 09:22:05 -0700, Darren New wrote:
>>
>>> On 4/18/2011 9:13, Jim Henderson wrote:
>>>> 100 MPH is two cars in a head-on collision doing only 50 MPH,
>>>> remember.
>>>
>>> No it isn't.
>>
>> 50 MPH each, that is.  Yes, the rate of closure is 100 MPH.
> 
> But the collision of each car is the same as running into a wall at
> 50MPH. So making it safe for a 50MPH crash means making it safe for two
> cars, each going 50MPH, to run head on into each other.

Oh, I see what you're saying - yes, the damage to each car isn't the same 
as the damage to one car hitting a wall at 100 MPH.

Jim

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