p201f03-exam02

p201f03-exam02 - Seat # Physics P201 D. Baxter/R. Heinz...

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Seat # Physics P201 D. Baxter/R. Heinz EXAM #2 October 23, 2003 7:00–9:00 PM INSTRUCTIONS 1. Please indicate with 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 sheets of formulas.
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1. A billiard ball (Ball #1) moving at 5.00 m/s strikes a stationary ball (Ball #2)of the same mass in an elastic collision. After the collision, Ball #1 moves at a velocity of 4.33 m/s at an angle of 30.0˚ with respect to its original motion. Find the speed of Ball #2 after the collision. a. 1.25 m/s b. 1.44 m/s c. 2.16 m/s d. 2.32 m/s e. 2.50 m/s 2. A Porsche (mass 1250 kg) with a speed of 40.0 m/s and an SUV (mass 1850 kg) with a speed of 30.0 m/s approach an intersection going in perpendicular directions. They collide and stick together. What is the speed of the two vehicles as they move together just after the accident? a. 24.1 m/s b. 26.1 m/s c. 28.1 m/s d. 30.1 m/s e. 32.1 m/s 3. A high-diver of mass 70.0 kg steps off of a platform 10.0 meters above the water. If his downward motion is stopped 5.00 m below where he entered the water,
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p201f03-exam02 - Seat # Physics P201 D. Baxter/R. Heinz...

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