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# 34_new - Reflection 1 florin(56950 This print-out should...

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Reflection 1 florin (56950) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 9) 10.0 points What is the di ff erence between a mathe- matical vector and a VPython Arrow object? 1. The arrow object, when displayed, has a di ff erent length but the same direction as the mathematical vector. 2. The arrow object, when displayed, has a di ff erent length and a di ff erent direction than the mathematical vector. 3. A mathematical vector always has its tail at the origin. An arrow object can have its tail anywhere. 4. The arrow object, when displayed, has a di ff erent direction but the same length as the mathematical vector. 5. A mathematical vector can have its tail located at any point. An arrow object must choose a particular point for the tail in order to display the vector. correct Explanation: 002 (part 2 of 9) 10.0 points For a VPython Arrow object, what is the di ff erence between the attributes ’pos’ and ’axis’? 1. pos tells VPython where to locate the tail of the vector; axis is the same as the mathe- matical vector to be displayed. correct 2. pos is the unit vector with the same di-rection as the mathematical vector to be dis-played; axis is the same as the mathematical vector to be displayed.

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34_new - Reflection 1 florin(56950 This print-out should...

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