finical aid with advanced algebra

Question

a car is traveling at 55 mi/hr before it enters into a skid. the drag factor of the road surface is 1.19, and the breaking efficiency is 95%. how long might the average skid mark be to the nearest tenth of a foot

Answer 1

Check out:

 

http://www.harristechnical.com/articles/skidmarks.pdf

 

However, most investigators would simply use a specialized calculator like the one found at:

 

http://ohiopd.com/skidmarks.php

 

The actual formula you need can be found at:

 

https://books.google.com/books?id=jQVOyOmKj6oC&pg=PA218&lpg=PA218&dq=formula+skid+drag+formula+drag+factor+braking+efficiency&source=bl&ots=1gytEP_vnK&sig=qJornrRK60nI3R6yEkudK8qLJ2A&hl=en&sa=X&ei=EMj_VJSvCojugwT-5oLQDw&ved=0CDEQ6AEwAw#v=onepage&q=formula%20skid%20drag%20formula%20drag%20factor%20braking%20efficiency&f=false