Question 367013
r=2sqrt5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet.  How far will a car skid at 70 mph?
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70 = 2sqrt5L
/2
35=sqrt5L
square both sides
35^2= 5L
35^2/5 = L
L = 245 feet
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m.ananth@hotmail.ca