PracticeExam1 - PHY2048 Section 4 Test 1 02/12/2007....

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PHY2048 Section 4 Test 1 02/12/2007. 45minutes. (30 points) Attempt all questions. Only scientific calculators without preprogrammed information are allowed. Clearly print your name, section number, and PID on your answer sheets. Useful fact: magnitude of acceleration due to gravity, g = 9.8 m/s 2 Section A. Multiple choice questions. Circle the letter(s) corresponding to the correct answer. (2 points each) 1. A bird’s eye view of a blue car traveling on a circular track is shown below. The car speeds up so that its speed at point B is twice its speed at point A. The average acceleration direction between points A and B is best described by a) vector a, b) vector b, c) vector c, d) vector d , e) vector e. 2. In the Atwood machine shown at right, two equal masses (m 1 = m 2 ) are initially held at rest at the position shown. The cord has a negligible mass and the pulley is completely frictionless. If the masses are released, a) m 2 will travel upward and m 1 downward until both masses are at
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PracticeExam1 - PHY2048 Section 4 Test 1 02/12/2007....

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