MT1Sol - Oregon State University Physics 201 Midterm Exam...

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Oregon State University Physics 201 Midterm Exam #1 Fall Term, l 2009 Form A General directions : Only one sheet of paper (8.5” x 11”—both sides), with only handwritten notes, may be used during this exam. You may use any kind of calculator, provided that it is not part of a PDA, cell phone, palmtop or laptop—and that it is not transmitting any information wirelessly. Physical constants and other possibly useful information are provided here. Answer Question #1 f rst. Physical constants and other possibly useful information: g = 9.80 m/s 2 Question #1: What is the Form designation (A, B, C, D, E, F or X) for your exam—shown at the top of this page? Write this letter in the answer box for Question 1 on the ± rst answer sheet in the exam booklet. For questions 2- 16 : For multiple-choice or true/false items, write the letter of the one best answer in the appropriate box on the answer sheet. For questions requiring short answers (a word or short phrase only), write those in the spaces provided. Youʼre graded on your answers only—no need to show work. Assume 3 signi± cant digits and SI units in all numeric answers unless instructed otherwise. True/False (2 points each) 2. True or false? If you throw a ball downward, its acceleration during its fall will be greater than a ball you drop from rest. F 3. True or false? When its acceleration is non-zero, an objectʼs speed can never be constant. F 4. True or false? If you travel at an angle of 20.0° west of south, for 55.0 s, at a speed of 30.0 m/s, you are more than 600 m farther to the west than originally. F 5. True or false? An object can have both zero ve- locity and non-zero acceleration. T 6. True or false? Angular position is a vector quantity. T 7. True or false? Time is a scalar quantity. T Short Answer (2 points each) 8. 10.0 minutes ago, you were running north at 8.00 m/s. Now youʼre running east at 5.00 m/s. What is the magnitude of your average acceleration over those 10.0 minutes? 1.57 x 10 -2 m/s 2 9. What is the de± nition of average velocity? Δ x / Δ t or displacement/ Δ t 10. One second after you toss a ball vertically upward (from the origin) with v i = 25.0 m/s, its velocity will be v F = 15.2 m/s . 11.
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MT1Sol - Oregon State University Physics 201 Midterm Exam...

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