<PRE><B>Question 1113404</B>
the stopping distance, s, of a car varies directly as the square of its speed, v. If a car traveling 60 mph requires 220ft to stop find the stopping distance for a car traveling 30 mph
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d = k*v^2 --- k is a constant
220 = k*60^2
k = 220/3600
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at 30 mi/hr:
d = (220/3600)*30^2
d = 55 feet

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