Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Part 1 - Multiple-Choice Practice Exam: 8

Answer

5 N only.

Work Step by Step

If the two vectors point in the same direction, they can have a maximum of 7 N. If they point in opposite directions, they can have a minimum of 1 N. Pointing them at right angles gives a resultant of 5 N, by the Pythagorean theorem. $$(3 N)^{2}+(4 N)^{2} =F^{2}$$ $$F=5 N$$
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