As the driver of an automobile travels north at 20 km/h in a parking lot, he observes

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As the driver of an automobile travels north at 20 km/h in a parking lot, he observes a truck approaching from the northwest. After he reduces his speed to 12 km/h and turns so that he is traveling in a northwest direction, the truck appears to be approaching from the west. Assuming that the velocity of the truck is constant during that period of observation, determine the magnitude and the direction of the velocity of the truck.

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Vector Mechanics for Engineers Statics and Dynamics

ISBN: 978-0073212227

8th Edition

Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell

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