SOLUTION: s=30fd can be used to find a cars speed s in miles per hour given the length d in feet of a skid mark and the friction factor f of the road. Police measured a skid mark of 90 feet
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Question 1135725: s=30fd can be used to find a cars speed s in miles per hour given the length d in feet of a skid mark and the friction factor f of the road. Police measured a skid mark of 90 feet on a dry concrete road, the friction factor is 0.8. If the speed limit is 35, was the car speeding ?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Substitute the values and evaluate s.
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