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Question: chapter 2 problem 2020 a train which is traveling at...

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Chapter 2, Problem 2/020 A train which is traveling at 73 mi/hr applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreased velocity is observed to be 54 mi/hr as it passes a point 1/2 mi beyond A. A car moving at 43 mi/hr passes point B at the same instant that the train reaches point A. In an unwise effort to beat the train to the crossing, the driver steps on the gas. Calculate the constant acceleration a that the car must have in order to beat the train to the crossing by 4.2 sec and find the velocity v of the car as it reaches the crossing. Train A 73 mi/hr 1.1 mi 43 mi/hr Car Answers: ft/sec2 mi/hr

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