An automobile initially moving 72. km/hr jams the brakes and skids to a stop in a distance of 24. meters on a dry pavement but stops in 81.6 m for a wet pavement (the auto weighs 2211.lbs; neglect reaction delay)
(a) What is the coefficient of friction for dry weather?
(b) What is the coefficient in wet weather conditions?
(c) Is this the STATIC or the KINETIC coefficient?

Question

An automobile initially moving 72. km/hr jams the brakes and skids to a stop in a distance of 24. meters on a dry pavement but stops in 81.6 m for a wet pavement (the auto weighs 2211.lbs; neglect reaction delay) 
(a) What is the coefficient of friction for dry weather?
(b) What is the coefficient in wet weather conditions?
(c) Is this the STATIC or the KINETIC coefficient?

Quizplus · Accepted Answer

The Answer of An automobile initially moving 72. km/hr jams the brakes and skids to a stop in a distance of 24. meters on a dry pavement but stops in 81.6 m for a wet pavement (the auto weighs 2211.lbs; neglect reaction delay) 
(a) What is the coefficient of friction for dry weather?
(b) What is the coefficient in wet weather conditions?
(c) Is this the STATIC or the KINETIC coefficient?

An Automobile Initially Moving 72