How do police determine how fast a car had been traveling after an accident has occurred?
Candi asked:
The formula r=2 sqrt5L can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in Feet. How far will a car skid at 55 mph? 90 mph
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The formula r=2 sqrt5L can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in Feet. How far will a car skid at 55 mph? 90 mph
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August 17th, 2009 at 12:00 am
Simply plug the numbers into the equation and solve or rearrange the equation first.
55=2 sqr 5L divide by 2
27.5=sqr5L square both sides
756.25 = 5L divide by 5
L = 151.25 at 55mph
or rearrange the equation r^2=4(5L)=20L
L= r^2 / 20
L = 90^2 / 20 = 405 at 90 mph