SOLUTION: The stopping distance s of a car varies directly as the square of its speed v. If a car traveling at 30 mph requires 45 ft to stop, find the stopping distance for a car traveling a
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Question 920108: The stopping distance s of a car varies directly as the square of its speed v. If a car traveling at 30 mph requires 45 ft to stop, find the stopping distance for a car traveling at 45 mph.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
S = k(v)^2
45 = k(30mph)^2
45 = k(900)
45/900 = k = .05
S = .05(v^2)
S = .05(45mph)^2 = 101.25ft
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