Asked by jazzy

The braking distance of a car varies directly as the square of the speed. If braking distance of a certain car is 49 feet at 30 mph, find the approximate braking distance at 65 mph

Answers

Answered by Damon
well, around four times :)

d = k v^2
49 = k (900)
k = 49/900

d = (49/900)(65)^2 = 230 feet
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