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

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 23P: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows...

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