Re: Tire marks on road

[John Barrer <forcejb@YAHOO.COM>]

At the beginning of the skid, the delta v between the
locked tire and the road is greatest. Thus, I think
the darkest area is at the start of the skid. Also, if
you inspect the tire tracks of a car that has "peeled
out" from a standing start, the tracks are darkest at
the start of the "peel", not at the end. Again,
greater delta v seems to be associated with darkness.
John Barrere
--- "Fakhruddin, Hasanbhai" <hfakhrud@BSU.EDU> wrote:
> A tire mark on a road due to hard braking is dark at
> one end and fade=
> s
> out at the other.  Which way was the vehicle moving
> when the brakes w=
> ere
> slammed? =20
>
> This morning I wondered when I saw such marks.
>
> Hasan Fakhruddin
> Instructor of Physics
> The Indiana Academy for Science, Mathematics, and
> Humanities
> BSU
> Muncie, IN 47306
> E-mail: hfakhrud@bsu.edu
>
> This posting is the position of the writer, not that
> of SUNY-BSC, NAU or the AAPT.


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This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.