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Unformatted text preview: Basically, in calculus terms, it is the rate of change of position. Distance is always positive since it is determined by the absolute value of the difference between two points. Displacement is not always. If I walk 3 feet forward and 8 feet backwards, my displacement is -5 but the distance i traveled is 11. Instantaneous velocity was the concept I found most confusing. I completely understand average velocity as measuring the different speeds a ball is traveling at different time intervals. When the time interval approaches zero, you basically have a value in the denominator that is not allowable. Using manipulations with limits and derivatives makes this possible, but I still sense that in the future I may struggle with this concept. I was able to work through the problems here, but I think that is because the calculations were still very basic steps with vectors. It took me 1 hour and the questions took me another hour...
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This note was uploaded on 01/14/2012 for the course PPE 253 taught by Professor Mellers during the Fall '11 term at UPenn.
- Fall '11