Answered: Surrey has a square-grid road system.…

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 71P: A commuter airplane starts from an airport and takes the route shown in Figure P1.71. The plane...

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Surrey has a square-grid road system. Streets running from north to south are numbered with every integer from 120 to 196 (inclusive) in order from west to east. Adjacent streets are 100 m apart. Sets of traffic lights are located on every eight streets, starting from 120th Street (i.e., 120th St, 128th St, etc.). Kay intends to drive along 88th Avenue from 120th Street to 196th Street at 60 km/h. (a) How long will it take Kay if all traffic lights are green? (b) Suppose traffic lights alternate green and red for one-minute intervals simultaneously, and Kay starts just when the light turns green at 120th Street. Now how long will it take Kay? [Assume a constant speed, i.e., ignore acceleration/deceleration.]

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