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Unformatted text preview: 1 PHY107 SPRING 2007 EXAM 1 Circle your instructors name : Prof. Jong Han Prof. Xuedong Hu Prof. Avto Kharchilava PRINT YOUR NAME LAST NAME FIRST NAME SIGN YOUR NAME STUDENT ID NUMBER INSTRUCTIONS This is a closed book exam except that you are allowed one 8.5x11 sheet with whatever you wish to write on it. There are 4 problems you must attempt them all. Allow approximately 20 minutes for each problem. You must show ALL your work to receive full credit. Numerical answers must have the right units and the appropriate number of significant figures . Use the back of the problem page if you need more space and mark OVER on the front side to indicate that there is material at the back side. Enter your answers in the box at the bottom of each page. PROBLEM NUMBER MAXIMUM SCORE YOUR SCORE GRADER 1 25 2 25 3 25 4 25 TOTAL 100 2 STUDENT ID NUMBER P1. Two persons, A and B, start from origin to a goal C. (See the figure). Person A first walks 2.1 km to the due west and then walks 3.5 km to the direction of angle 45 degrees to the north from the east. Person B walks straight to the goal C. a. (5) What is the displacement vector ,1 A R G of the first part of As walk in the unit-vector notation?...
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This note was uploaded on 09/24/2008 for the course PHY 107 taught by Professor Han during the Spring '08 term at SUNY Buffalo.
- Spring '08