The driver of a vehicle travelling 80 kph at an ascending grade requires 9 meters less...

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The driver of a vehicle travelling 80 kph at an ascending grade requires 9 meters less to stop after he applies the brakes than travelling at the same initial speed down the same grade. If the coefficient of friction between the tires and pavement is 0.50, what is the percent grade? What is the braking distance down the grade? 4.4%, 55.27 meters The driver of a vehicle travelling 80 kph at an ascending grade requires 9 meters less to stop after he applies the brakes than travelling at the same initial speed down the same grade. If the coefficient of friction between the tires and pavement is 0.50, what is the percent grade? What is the braking distance down the grade? 4.4%, 55.27 meters