# hw2 - kveton(ajk643 hw2 morrison(60620 This print-out...

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kveton (ajk643) – hw2 – morrison – (60620) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 oF 2) 10.0 points Given two vectors v F 1 , and v F 2 . Where the magnitude oF these vectors are F 1 = 66 N , and F 2 = 64 N . And where θ 1 = 286 , and θ 2 = 158 . The angles are measure From the positive x axis with the counter-clockwise angular direc- tion as positive. Draw the vectors to scale on a graph to determine the answer. What is the magnitude oF the resultant vec- tor b v F b , where v F = v F 1 + v F 2 ? 1. 163 . 61 N 2. 52 . 255 N 3. 119 . 147 N 4. 127 . 91 N 5. 57 . 0166 N 6. 78 . 9746 N 7. 133 . 77 N 8. 62 . 0837 N 002 (part 2 oF 2) 10.0 points Note: Give the angle in degrees, use coun- terclockwise as the positive angular direction, between the limits oF 180 and +180 From the positive x axis. What is the direction oF this resultant vec- tor v F ? 1. 136 . 193 2. 19 . 5293 3. 46 . 6597 4. 174 . 238 5. 111 . 257 6. 24 . 6651 7. 125 . 507 8. 34 . 2656 003 10.0 points When two vectors sum to zero, how must they be related? 1. All are wrong. 2. The magnitudes are di±erent; the direc- tions are opposite. 3. Both magnitude and direction are the same. 4. The magnitudes are di±erent; the direc- tions are the same. 5. The magnitudes are the same; the direc- tions are opposite. 004 10.0 points Vectors v A , v B , v C , and v D are shown in the fgure below. ²or convenience, the tails oF each vector are arbitrarily located at (0,0). y 5 3 1 0 1 2 3 4 5 x 5 4 3 2 1 0 1 2 3 4 5 A B C D Select the fgure showing the resultant vec- tor v R , where v R = + v A v B + v C + v D .

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## This note was uploaded on 11/10/2009 for the course PHY 309K taught by Professor Fischler during the Fall '08 term at University of Texas.

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hw2 - kveton(ajk643 hw2 morrison(60620 This print-out...

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