You are called as an expert witness in a trial for a traffic violation. The facts are these: A driver slammed on his brakes and came to a stop with constant acceleration. Measurements of his tires and the skid marks on the pavement indicate that he locked his car’s wheels, the car traveled 192 ft before stopping, and the coefficient of kinetic friction between the road and his tires was 0.750. He was charged with speeding in a 45 mi>h zone but pleads innocent. What is your conclusion: guilty or innocent? How fast was he going when he hit his brakes?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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You are called as an expert witness in a
trial for a traffic violation. The facts are these: A driver slammed on his
brakes and came to a stop with constant acceleration. Measurements of
his tires and the skid marks on the pavement indicate that he locked his
car’s wheels, the car traveled 192 ft before stopping, and the coefficient
of kinetic friction between the road and his tires was 0.750. He was
charged with speeding in a 45 mi>h zone but pleads innocent. What is
your conclusion: guilty or innocent? How fast was he going when he hit
his brakes?

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