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Get Full Access to University Physics - 13 Edition - Chapter 5 - Problem 86p
Get Full Access to University Physics - 13 Edition - Chapter 5 - Problem 86p

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# CP Traffic Court. You are called as an expert witness in a

ISBN: 9780321675460 31

## Solution for problem 86P Chapter 5

University Physics | 13th Edition

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Problem 86P

CP Traffic Court.? 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?

Step-by-Step Solution:

Solution 86P Step 1: In this question we need to find the velocity of a car Let us consider the data given Final distance travelled d = 192 ft Converting this to meter we have d = 58.5216 m Kinetic coefficient = 0.750 k

Step 2 of 2

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