OT Car crash Physics...

[jlagnese@massed.net (John Lagnese)]

Acceleration should be a negative number in this case. Cathy, what do you think?

John

Jason Adams wrote:

> With all the wealth of informed people on the list this shouldn't be too
> difficult...
>
> If I know the weight of the cars, the skid distance, assume complete
> inelastic collision. how do I work it out...
>
> uK = 0.72 (tire on asphalt)
> M1 = 2260Kg
> M2 = 220Kg
> dS = 2.44m
>
> my number crunching came up with ~60km/h as Vo for M2
>
> based on facts:
>
> a = uK * g = 0.72 * 9.81m/s^2 = 7.06 is this the Maximum deceleration for an
> Automobile?
>
> Vf^2 = Vo^2 + 2a(dS)
>
> is there something wrong with my assumption for 'a' ?
>
> Jason Adams
> Fahrvergnugen Forever! ;)
> 84 rocco 16v
> 93 320i
> 98 Z71
>
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