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205M_Spring2010_practice_test3 - PY 205 Practice Test 3...

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PY 205 Practice Test 3 Spring 2010 Note: THIS TEST MAY BE LONGER THAN THE ACTUAL TEST. It is a sample and does not include questions on every topic covered since the start of the semester. Also be sure to review Clicker questions homework assignments on Webassign White board problems worked in the lab Exercises, Examples, and Review Questions (at the end of each chapter)in your textbook Name (print) __________________________________ When you turn in the test, including the formula page, you must show an NCSU photo ID to identify yourself. Do not use other paper. If you need more space, write on the blank page included at the end of the test, and indicate that you did this. Read all problems carefully before attempting to solve them. Your work must be legible, and the organization must be clear. You must show all your 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 don’t want us to read! Make explanations complete but brief. Do not write a lot of prose. Include diagrams! Show what goes into a calculation, not just the final number: ( )( ) ( )( ) 4 4 5 6 3 10 5 10 4 10 2 10 5 10 8 x x x x x d c b a = = 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 can’t calculate (explain that you are doing this), and use it to do the rest of the problem. SIGN THE HONOR PLEDGE: I have neither given nor received unauthorized aid on this test. ----------------------------------------------------------------------------------------------- Sign your name on the line above.
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Things you must know: Definition of average velocity Definition of momentum The Momentum Principle Definitions of particle energy, kinetic energy, and work The Energy Principle Other fundamental principles: Multiparticle systems: 𝑟 𝑐𝑚 = 𝑚 1 𝑟 1 + 𝑚 2 𝑟 2 + . . . 𝑚 1 + 𝑚 2 + . . . 𝑃 𝑡𝑜𝑡 𝑀 𝑡𝑜𝑡 ⃗𝑣 𝑐𝑚 ( 𝑣 << 𝑐 ) 𝐾 𝑡𝑜𝑡 = 𝐾 𝑡𝑟𝑎𝑛𝑠 + 𝐾 𝑟𝑒𝑙 𝐾 𝑟𝑒𝑙 = 𝐾 𝑟𝑜𝑡 + 𝐾 𝑣𝑖𝑏 𝐾 𝑡𝑟𝑎𝑛𝑠 1 2 𝑀 𝑡𝑜𝑡 𝑣 2 𝑐𝑚 ( 𝑣 << 𝑐 ) 𝐼 = 𝑚 1 𝑟 2 1 + 𝑚 2 𝑟 2 2 + . . .
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