21. A arctic tern was born in north pole. In autumn, it flys for about 20000 km to south pole, and then return back to north pole in next spring. Using the Earth as reference frame. If the artic tern spent 60 days for its first trip from north pole to south pole, what is the averaged velocity during this 60 days? (Assume earth radius 6400 km)

21. A arctic tern was born in north pole. In autumn, it flys for about 20000 km to south pole, and then return back to north pole in next spring. Using the Earth as reference frame. If the artic tern spent 60 days for its first trip from north pole to south pole, what is the averaged velocity during this 60 days? (Assume earth radius 6400 km)

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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