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Motion Maps

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'Modeling Workshop Project 2002 1 Unit II Reading-Motion Maps v2.0UNIT II READING: MOTION MAPSA motion map represents the position, velocity, and acceleration of an object at various clockreadings. (At this stage of the class, you will be representing position and velocity only.)Suppose that you took a stroboscopic picture of a car moving to the right at constant velocitywhere each image revealed the position of the car at one-second intervals.This is the motion map that represents the car. We model the position of the object with a smallpoint. At each position, the object’s velocity is represented by a vector.If the car were traveling at greater velocity, the strobe photo might look like this:The corresponding motion map has the points spaced farther apart, and the velocity vectors arelonger, implying that the car is moving faster.If the car were moving to the left at constant velocity, the photo and motion map might look likethis:More complicated motion can be represented as well.Here, an object moves to the right at constant velocity, stops and remains in place for twoseconds, then moves to the left at a slower constant velocity.'Modeling Workshop Project 2002 2 Unit II Reading-Motion Maps v2.0Consider the interpretation of the motion map below. At time t = 0, cyclist A starts moving tothe right at constant velocity, at some position to the right of the origin.Cyclist B starts at the origin and travels to the right at a constant, though greater velocity.At t = 3 s, B overtakes A (i.e., both have the same position, but B is moving faster).A graphical representation of the behavior of cyclists A and B would like this:You could also represent the behavior algebraically as follows: xvtxxvtAB=+=0,, for A for B where vB > vAThroughout this semester, you will be representing the behavior of objects in motion in multipleways: diagramatically (motion maps), graphically and


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