SOLUTION: v = √ 20 L to estimate the speed of a car, v , in miles per hour, based on the length, L , in feet, of its skid marks when suddenly braking on a dry, asphalt road.

Algebra ->  Square-cubic-other-roots -> SOLUTION: v = √ 20 L to estimate the speed of a car, v , in miles per hour, based on the length, L , in feet, of its skid marks when suddenly braking on a dry, asphalt road.      Log On


   

Question 1197009: v
=
√
20
L

to estimate the speed of a car,
v
, in miles per hour, based on the length,
L
, in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid marks to be 105 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi  
v = sqrt%2820L%29  v is the speed 
L the length in feet of the skid mark when suddenly braking on a dry, asphalt road
Question States:
Skid marks to be 105 feet long
Approximately how fast was the car traveling? 
v = sqrt%2820%2A105%29  = 45.8 mi/hr  (to the nearest tenth)

Wish  You the Best in your Studies.