1. A unit vector is A) without dimensions. B) without direction. C) without magnitude. D) None of the above. 2. The force F = (3 i + 4 j ) N has a magnitude of A) 3 N. B) 4 N. C) 5 N. D) None of the above. READING QUIZ

2. The unit vector from point A to point B can be determined by taking the position vector r AB and ______. A) multiplying it by its scalar magnitude B) dividing it by its scalar magnitude C) multiplying it by its directional cosine formula D) dividing it by its directional cosine formula 1. The magnitude of the position vector between the points A and B represents A) the direction of vector r AB. B) the distance between points A and B. C) the force between A and B. D) None of the above. CONCEPT QUIZ

1. A position vector is a(n) A) moving vector. B) sliding vector. C) fixed vector. D) unit vector. ATTTENTION QUIZ 2. The position vector of point A (1, 0, 3) relative to B (2, 4, 0) can be represented by A) r BA = – i + 4 j + 3 k B) r BA = i – 4 j + 3 k C) r BA = – i – 4j – 3 k D) r BA = – i – 4 j + 3 k