[LINK] OT: Speed, acceleration or something else? [WAS] Mobile phone use set to be banned in vehicles - nanny state??
francisoconnor3 at bigpond.com
Fri Feb 11 15:16:32 AEDT 2011
Spot on, Dave
Inertia is the villain.
At 11:30 AM +1100 11/2/11, David Boxall wrote:
>On 10/02/2011 5:09 PM, Kim Holburn wrote:
>> On 2011/Feb/10, at 4:12 PM, Paul Brooks wrote:
>>> On 10/02/2011 3:33 PM, Kim Holburn wrote:
>>>> But it's still true like I said: it's not the speed it's the
>>>>acceleration that kills.
>>> Falling off a building doesn't kill - its the sudden stop at the end.
>> Yes. Both are acceleration. Acceleration that's imposed on every
>>particle in your body like gravity is not felt. Acceleration
>>that's applied to the outside of you body causes stresses. The
>>sudden stop at the end can apply accelerations of hundreds of Gs
>>which causes huge stresses between the parts of your body that have
>>already stopped and the parts that are still going.
>Is it really speed or acceleration? Isn't it more that, when other
>things change, we don't? Isn't it more accurate to say that inertia kills?
>David Boxall | ignorance more frequently
> | begets confidence than does
>http://david.boxall.id.au | knowledge
> | --Charles Darwin (introduction
> | to 'The Descent of Man' 1871)
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