An airplane flies 5.0 x 103 km from Boston to San Francisco at an air speed of 250 m/s. On the way to San Francisco, the airplane faces a headwind of 50.0 m/s blowing from west to east, and a tailwind of the same speed on the way back.  (a) Calculate the average speed of the airplane relative to the ground on the way west. (b) Calculate the average speed of the airplane relative to the ground on the way east

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter10: Motion In A Noninertial Reference Frame
Section: Chapter Questions
Problem 10.18P
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An airplane flies 5.0 x 103 km from Boston to San Francisco at an air speed of 250 m/s. On the way to San Francisco, the airplane faces a headwind of 50.0 m/s blowing from west to east, and a tailwind of the same speed on the way back. 

(a) Calculate the average speed of the airplane relative to the ground on the way west.

(b) Calculate the average speed of the airplane relative to the ground on the way east.

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