94782 - PHYS 2211, Test 1, September 18, 2008 Name (print)...

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Unformatted text preview: PHYS 2211, Test 1, September 18, 2008 Name (print) Instructions Read all problems carefully before attempting to solve them. Your work must be legible, and the organization must be clear. You must show all work, including correct vector notation. Correct answers without adequate explanation will be counted wrong. Incorrect work or explanations mixed in with correct work will be counted wrong. Cross out anything you dont want us to read! Make explanations correct but brief. Dont write a lot of prose. Include diagrams! Show what goes into a calculation, not just the final number, e.g.: a b c d = (8 10- 3 )(5 10 6 ) (2 10- 5 )(4 10 4 ) = 5 10 4 Give standard SI units with your results. Unless specifically asked to derive a result, you may start from the formulas given on the formula sheet, including equations corresponding to the fundamental concepts. If a formula you need is not given, you must derive it. If you cannot do some portion of a problem, invent a symbol for the quantity you cant calculate (explain that you are doing this), and use it to do the rest of the problem. Honor Pledge In accordance with the Georgia Tech Honor Code, I have neither given nor received unauthorized aid on this test. Sign your name on the line above PHYS 2211 Do not write on this page! Problem Score Grader Problem 1 (25 pts) Problem 2 (25 pts) Problem 3 (25 pts) Problem 4 (25 pts) Problem 1 (25 Points) 2 4 6 8 10-100-80-60-40-20 20 40 60 80 100 t p y (t) (a, 6 pts) Consider the parabolic motion (in the x-y coordinate system) of a cannonball in the presence of the Earths gravitational field. If the Y-component of the momentum, p y , changes with time, t , (as shown in the graph above) why is p y changing sign?...
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94782 - PHYS 2211, Test 1, September 18, 2008 Name (print)...

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