203-nya_mechanics_exam_-_may_2006

203-nya_mechanics_exam_-_may_2006 - Student name: Student...

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NYAfinalMay2006.doc Page 1 of 10 Student name: ………………………………………………… Student ID: ……………………………. . Section: ……………. . Teacher’s name: ……………………………………………… Dawson College Physics NYA Mechanics FINAL EXAMINATION Thursday, May 18, 2006, 9:30 am - 12:30 pm This exam is divided in three parts: Part I: Problems . Please solve all six ( 6 ) problems. Show all your reasoning . If a formula is not in the formula sheet, it must be derived. Answer directly on the question sheet. A second blank page is provided with each page, if extra space is needed. 10 points each . Part II: Multiple Choice Questions : Circle the appropriate answer (the letter only) for the following quantitative multiple choice questions. You may answer 8 out of 10 questions. Space is provided to carry out your work. Only the answer will be considered for marks, not the reasoning. Clearly rule out the two questions you chose not to answer . 2.5 points each. Part III: Conceptual questions . Circle the appropriate answer (the letter only) for the following conceptual multiple choice questions. You may answer 10 out of 12 questions. Space is provided to carry out your work. Only the answer will be considered for marks, not the reasoning. Clearly rule out the two questions you chose not to answer . 2 points each. Formulae and constants are given on the last page INSTRUCTIONS 1. The time allotted for this examination is three hours . 2. Answer directly on the sheets of this package. If you need additional space write on the back. 3. Use g = 9.8 m/s 2 . 4. You may detach the formula sheet from this package. 5. Write your name and the name of your teacher on the top of this page. 6. When finished, make sure this entire package and the formula sheet are returned to your instructor. Good luck!
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Page 2 of 10 Part I: Long Answer Questions Part I: Please solve all six (6) problems . Show your reasoning to obtain full marks. If a formula is not on the formula sheet, it must be derived. 1. A 1 kg box slides on a vertical wall while being pushed at an angle of 30 ° as shown in the figure below. The coefficient of kinetic friction ( µ k ) between the box and the wall is 0.20. (a) Draw free-body diagrams for both upward and downward sliding possibilities. (b) If the applied force, F app has a magnitude of 12N, determine whether the box is sliding up or down the wall. Find the magnitude of the acceleration for this F app . (c) Suppose now that the box is sliding downward at constant speed. In this case, find the required magnitude of the applied force oriented as in the figure to produce these dynamics. 2. A ball is thrown toward a cliff of height h with a speed of 30 m/s and an angle of 60 degrees above the horizontal. It lands on the edge of the cliff 4.0 s later.
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203-nya_mechanics_exam_-_may_2006 - Student name: Student...

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