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neshia4 neshia4
  • 11-05-2016
  • Mathematics
Answered

the braking distance D in feet required to stop a car traveling x miles per hour on dry , level pavement can be approximated by D=1/9x^2

Verified Answer :

alisadekker alisadekker
  • 11-05-2016

We can find as follows 
x D=x^2/9 
speed braking distance 
mph in feet 
20 44.44 
60 400.00 

b) x^2/9=16 
x^2=144 
x=12 mph

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