p140w06_exam_1_4 - Physics 140 Winter 2006 Exam#1 Please...

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Physics 140 Winter 2006: Exam #1 Please print your name:___________________________________________________ Please list your discussion section number:___________________________________ Please list your discussion instructor:________________________________________ Form #4 Instructions 1. Fill in your name above 2. This will be a 1.5 hour, closed book exam. The exam includes 20 questions. 3. You may use a calculator, please do not share calculators 4. You may use one 3”x5” note card with notes and equations you think may be useful. You can write on both sides of the card if you like. 5. You will be asked to show your University student ID card when you turn in your exam. Discussion section reminder: Section 004 Svetlana Malinovskaia Section 005 Svetlana Malinovskaia Section 006 Svetlana Malinovskaia Section 007 Ctirad Uher Section 008 Ctirad Uher Section 009 Ctirad Uher Section 010 Fred Becchetti Section 011 Fred Becchetti Section 012 Fred Becchetti Section 013 Alan Krisch Section 014 Alan Krisch Section 015 Alan Krisch Section 016 Svetlana Malinovskaia Section 017 Svetlana Malinovskaia Section 018 Svetlana Malinovskaia Section 019 Konstantin Bobkov Section 020 Arthur Cole Section 021 Konstantin Bobkov Section 022 Dave Winn Section 023 Dave Winn Section 024 Dave Winn Section 025 Arthur Cole Section 026 Arthur Cole
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1: The coefficients of friction between the incline and the block are as follows: μ s = 0.8, μ k =0.74 Which of the following statements about this situation is true? a) If the block is placed at rest on the incline it will begin to slide. b) If the block is placed at rest on the incline it will remain motionless. If it is then given a shove down the incline it will begin to accelerate downward. c) If the block is placed at rest on the incline it will remain motionless. If it is then given a shove down the incline it will slow down and stop after the shove is over. d) If the block is placed at rest on the incline it will remain motionless. If it is given a shove down the incline it will move at a constant speed down the incline after the shove is over. e) The block will begin to slide downward after it is placed at rest on the incline, but it will quickly slow down and come to a stop after it travels a short distance. 2: x ×  y y × x = a) z b) -1 c) 1 d) 0 e) 2
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3: A motorcycle travels due south 25 m/s relative to the highway. An SUV travels at the same speed relative to the highway, but at a heading of 30 degrees south of east. What is the speed of the SUV relative to the motorcycle?
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