A man in a Jeep breaks, skids, and hits the blue car at 30 miles an hour. The Jeep left 45 foot skid marks with all four tires. The drag value of road is 0.75. How fast was the Jeep going when he first he hit the brakes?
S= square root of 30 x D x f x n
S total = square root of S2 skid + S2 impact
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