In designing a freeway on-ramp, you must make it long enough for cars to be able to accelerate and merge safely with traffic traveling at speeds of 70 mph. For an off-ramp, the cars must be able to come to a stop from 35 mph over the length of the ramp. Your traffic engineers provide the following data: Powerful cars can accelerate from rest to 50 mph in 5.2 s, while less powerful cars take twice as long to do this. When slowing down from 35 mph, a car with good tire treads will take 8.4 s to stop, whereas one with bald tires takes 16.6 S. Part A In order to safely accommodate all the types of vehicles, what should be the minimum length (in meters) of on-ramps? Express your answer using two significant figures. Lon= Part B V ΑΣΦ Loff = ? In order to safely accommodate all the types of vehicles, what should be the minimum length (in meters) of off-ramps? Express your answer using two significant figures. VO ΑΣΦ m ? m

In designing a freeway on-ramp, you must make it long enough for cars to be able to accelerate and merge safely with traffic traveling at speeds of 70 mph. For an off-ramp, the cars must be able to come to a stop from 35 mph over the length of the ramp. Your traffic engineers provide the following data: Powerful cars can accelerate from rest to 50 mph in 5.2 s, while less powerful cars take twice as long to do this. When slowing down from 35 mph, a car with good tire treads will take 8.4 s to stop, whereas one with bald tires takes 16.6 S. Part A In order to safely accommodate all the types of vehicles, what should be the minimum length (in meters) of on-ramps? Express your answer using two significant figures. Lon= Part B V ΑΣΦ Loff = ? In order to safely accommodate all the types of vehicles, what should be the minimum length (in meters) of off-ramps? Express your answer using two significant figures. VO ΑΣΦ m ? m

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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