A train which is traveling at 80 mi/h applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreased velocity is observed to be 60 mi/h as it passes a point 1/2 mi beyond A. A car moving at 50 mi/h 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 sec and find the velocity "v" of the car as it reaches the crossing. Train 1 mi 80 mi/hr Car 50 mi/hr 1.3 mi

A train which is traveling at 80 mi/h applies its brakes as it reaches point A and slows down with a constant deceleration. Its decreased velocity is observed to be 60 mi/h as it passes a point 1/2 mi beyond A. A car moving at 50 mi/h 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 sec and find the velocity "v" of the car as it reaches the crossing. Train 1 mi 80 mi/hr Car 50 mi/hr 1.3 mi

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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