SOLUTION: The braking distance (in feet) of a car going V mph is given by {{{d(V)=v^2/20+v}}} V is greater or equal to zero.
how fast would a car have been traveling for a braking distanc
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Question 331439: The braking distance (in feet) of a car going V mph is given by V is greater or equal to zero.
how fast would a car have been traveling for a braking distance of 150ft? round to the nearest mile per hour
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
\ =\ \frac{V^2}{20}\ +\ V)
Use the quadratic formula since it doesn't factor neatly. Also, toss out the negative root since 
is specified.
John
My calculator said it, I believe it, that settles it
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