Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 4 - Motion in Two and Three Dimensions - Problems: 2a

Answer

(-5m)i + (8m)j

Work Step by Step

In order to find the position vector of a particle, you need to find it's displacement from the origin (0,0,0). In this question, you are told that the watermelon seed has the coordinates x=(-5m), j = 8m and z=0m. Since x corresponds to i, y corresponds to j and z corresponds to k, these can be changed to i = -5m, j = 8m and k=0m. Writing these in unit vector notation we have: (-5m)i + (8m)j + (0m)k Since the k component is zero, we can write it merely as (-5m)i + (8m)j
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