An airplane with a speed of 40 km/h is heading 78º east of north with a wind blowing west at 18 km/h. What is the speed of the airplane relative to the ground?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
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An airplane with a speed of 40 km/h is heading 78º east of north with a wind blowing west at 18 km/h. What is the speed of the airplane relative to the ground?   

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