A car is about to exit through a ramp traveling at a speed of 60 km/h. It starts decelerating uniformly as it reaches point A because it has to decrease its speed to 40 km/h before entering the ramp at B. From point B, it then decelerates by 0.2 m/s2 until it reaches point C, after which it travels at a constant speed.

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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A car is about to exit through a ramp
traveling at a speed of 60 km/h. It starts
decelerating uniformly as it reaches point A
because it has to decrease its speed to 40
km/h before entering the ramp at B. From point
B, it then decelerates by 0.2 m/s2 untilit
reaches point C, after which it travels at a
constant speed.
100 m
80 m
Determine the magnitude of the total car
acceleration in m/s:
A. just before it gets to B, (ans: .7716 m/s2)
B. right after it passes B, (ans: 1.5561 m/s2)
C. at point c, (ans: 0.3495 m/s2)
D. right after it passes C. (ans: .2866 m/s2)
Transcribed Image Text:A car is about to exit through a ramp traveling at a speed of 60 km/h. It starts decelerating uniformly as it reaches point A because it has to decrease its speed to 40 km/h before entering the ramp at B. From point B, it then decelerates by 0.2 m/s2 untilit reaches point C, after which it travels at a constant speed. 100 m 80 m Determine the magnitude of the total car acceleration in m/s: A. just before it gets to B, (ans: .7716 m/s2) B. right after it passes B, (ans: 1.5561 m/s2) C. at point c, (ans: 0.3495 m/s2) D. right after it passes C. (ans: .2866 m/s2)
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