p201f02-exam02

p201f02-exam02 - Seat # Physics P201 D. Baxter/R. Heinz...

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Seat # Physics P201 D. Baxter/R. Heinz EXAM #2 October 24, 2002 7:00–9:00 PM INSTRUCTIONS 1. Please indicate which form (1, 2, 3, or 4) exam you have by marking the appropriate bubble in column “P” of the SPECIAL CODES box on your answer sheet. Your exam is form 1 . 2. Sit in SEAT # given above. 3. DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD TO DO SO. 4. Print your name (last name first) and blacken in the letters on the answer sheet with a #2 pencil. 5. Print your student number (identification number) and blacken in the numbers on the answer sheet with a #2 pencil. 6. Use the fronts and backs of the question sheets for scratch work. Do not use any other scratch sheets. 7. This is a multiple choice exam. Blacken in the answer to each question on the answer sheet. Fill in one and only one answer to each question. 8. Keep your eyes on your own work. 9. You have two hours to complete the exam. When you finish, please show your picture ID as you turn in your answer sheet. Please leave quietly so others are not disturbed. 10. THERE ARE 24 QUESTIONS PLEASE ANSWER ALL OF THEM. THERE IS NO PENALTY FOR GUESSING! This is a closed book, closed note exam! You may use only a calculator and two self-prepared sheet of formulas.
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1. Preston pushes a wheelbarrow weighing 500 N to the top of a 50.0 m long ramp, inclined at 20.0° with the horizontal, and leaves it. Tamara accidentally bumps the wheelbarrow. It slides back down the ramp, during which a frictional force of magnitude 80.0 N acts on it over the 50.0 m. What is the wheelbarrow’s kinetic energy at the bottom of the ramp? a. 4,550 J b. 6,550 J c. 8,150 J d. 10,150 J e. 12,150 J 2. An amount of work equal to 1.5 J is required to compress the spring in a horizontal spring-gun. What is the “launch speed” of a 15 g marble launched by this gun? a. 26 m/s 22 m/s c. 18 m/s d. 14 m/s e. 10 m/s 50 m 20 o
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3. A 525 kg mass is released from rest on the right side of a track at a height 3.5 m above a horizontal surface at the foot of the slope. It collides elastically with a 525 kg mass which is initially at rest on the horizontal surface, as shown in the figure.
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p201f02-exam02 - Seat # Physics P201 D. Baxter/R. Heinz...

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