Solve Prob. 12.14, assuming that the brakes of car B fail to operate. Problem 12.14: A light train made up of two cars is traveling at 55 mi/h when the brakes are applied to both cars. Knowing that car A has a weight of 55,000 lb and car B has a weight of 44,000 lb and that the braking force is 7000 lb on each car, determine

(a) The distance traveled by the train before it comes to a stop,

(b) The force in the coupling between the cars while the train is slowingdown.

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55 mph 55,000 lb B 44,000 lb