Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 3 - Kinematics in Two Dimensions; Vectors - Problems: 16

Answer

a. $x=\pm 62.2 units $ b. The unknown vector is (-142.2, 65).

Work Step by Step

a. Use the Pythagorean theorem to find the 2 possible x components. $$(x)^{2}+(-65)^{2} =(90)^{2}$$ $$x=\pm 62.2 units $$ b. Sum the vectors, with the second vector to be determined. (62.2, -65) + (Vx, Vy) = (-80, 0) The unknown vector is (-142.2, 65).
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