12. An express bus travels directly from A-town to B-ville. A local bus also links these two towns, but it goes west 30 km from A-town to C-city, then 30 km south to D-ville, and finally 12 km west to E-town and 30 km northeast to B-ville. (a) What is the shortest distance from A-town to B-ville? (b) In what direction does the express bus travel? (c) If the express bus takes 0.45 h to go from A-town to B-ville, and the local bus takes 3.0 h, calculate the average speed and the average velocity for each bus.

12. An express bus travels directly from A-town to B-ville. A local bus also links these two towns, but it goes west 30 km from A-town to C-city, then 30 km south to D-ville, and finally 12 km west to E-town and 30 km northeast to B-ville. (a) What is the shortest distance from A-town to B-ville? (b) In what direction does the express bus travel? (c) If the express bus takes 0.45 h to go from A-town to B-ville, and the local bus takes 3.0 h, calculate the average speed and the average velocity for each bus.

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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Question

12. An express bus travels directly from A-town to B-ville. A local bus also links these two
towns, but it goes west 30 km from A-town to C-city, then 30 km south to D-ville, and finally
12 km west to E-town and 30 km northeast to B-ville.
(a) What is the shortest distance from A-town to B-ville?
(b) In what direction does the express bus travel?
(c) If the express bus takes 0.45 h to go from A-town to B-ville, and the local bus takes 3.0 h.
calculate the average speed and the average velocity for each bus.

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