SOLUTION: The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 50 mph can stop in 110 ​ft, how many feet will
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Question 1101612: The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 50 mph can stop in 110 ft, how many feet will it take the same car to stop when it is traveling 100 mph?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
where is the
constant of proportionality
-------------------------
----------------------
The car will stop in 440 ft
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Note that the units on the left must be
the same as the units on the right
[ ft ] = [ k ] x [ mi^2 / hrs^2 ]
So in order to balence the units,
must have units of:
[ [ ft x hrs^2 ] / [ mi^2 ]
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