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# 04 - fryer(vdf96 – Assignment 3 Newton’s Laws of Motion...

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Unformatted text preview: fryer (vdf96) – Assignment 3 Newton’s Laws of Motion – graves – (6) 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 8) 10.0 points Consider a toy car which can move to the right or left along a horizontal line (the pos- itive part of the distance axis) and a force applied to that car. car v O + Identify the force that would allow the car to move toward the right (away from the ori- gin) with a steady rate (constant velocity ). Assume friction is so small that it can be ig- nored. 1. t F 2. t F 3. t F 4. t F 5. None of these 6. t F 7. t F cor- rect 8. t F 9. t F 10. t F Explanation: Constant velocity (in either direction) means zero acceleration: F = ma = 0 . 002 (part 2 of 8) 10.0 points Identify the force that would allow the car to remain at rest . 1. t F fryer (vdf96) – Assignment 3 Newton’s Laws of Motion – graves – (6) 2 2. t F cor- rect 3. t F 4. t F 5. t F 6. t F 7. None of these 8. t F 9. t F 10. t F Explanation: Zero velocity means zero acceleration: F = ma = 0 . 003 (part 3 of 8) 10.0 points Identify the force that would allow the car to move toward the right and speed up at a steady rate (constant acceleration ). 1. t F 2. None of these 3. t F 4. t F 5. t F 6. t F fryer (vdf96) – Assignment 3 Newton’s Laws of Motion – graves – (6) 3 7. t F cor- rect 8. t F 9. t F 10. t F Explanation: Positive velocity speeding up at a constant rate means constant positive acceleration and a constant positive force: F = ma > . 004 (part 4 of 8) 10.0 points Identify the force that would allow the car to move toward the left at a steady rate (con- stant velocity ). 1. t F 2. t F 3. t F cor- rect 4. t F 5. t F 6. None of these 7. t F 8. t F 9. t F 10. t F Explanation: Constant velocity (in either direction) fryer (vdf96) – Assignment 3 Newton’s Laws of Motion – graves – (6) 4 means zero acceleration: F = ma = 0 . 005 (part 5 of 8) 10.0 points Identify the force that would allow the car to move toward the right and slow down at a steady rate (constant acceleration ). 1. t F 2. t F cor- rect 3. t F 4. t F 5. t F 6. t F 7. t F 8. t F 9. t F 10. None of these Explanation: Positive velocity slowing down at a steady rate means constant negative acceleration and constant negative force: F = ma < . 006 (part 6 of 8) 10.0 points Identify the force that would allow the car to move toward the left and speed up at a steady rate (constant acceleration ). 1. t F 2. None of these 3. t F fryer (vdf96) – Assignment 3 Newton’s Laws of Motion – graves – (6) 5 4. t F 5. t F 6. t F 7. t F 8. t F 9. t F cor- rect 10. t F Explanation: Negative velocity speeding up at a steady rate means constant negative acceleration and a constant negative force: F = ma < ....
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04 - fryer(vdf96 – Assignment 3 Newton’s Laws of Motion...

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