Answered: A cross country skier 7.40 km in the…

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 cross country skier 7.40 km in the direction 30 degrees west of south, then 2.80 km in the direction 45 degrees north of west, and finally 6 km in the direction 22 degrees east of north. To then return to his starting point, how far and in what direction must he travel?

-A person who is 35 ft east of you runs north at 16 ft/s. At what angle north of east would you throw a ball at 60 ft/s groundspeed in order to hit him?

-What is the kinetic energy of a 3000 lb automobile which is moving at 30 mi/h?

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A person who is 35 ft east of you runs north at 16 ft/s. At what angle north of east would you throw a ball at 60 ft/s groundspeed in order to hit him?

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