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Coordinate Systems     Image Added

Because a difference in position is required when employing the One of the only complications that can arise in the simple Law of Change for the One-Dimensional Motion with Constant Velocity model is the issue of choice of coordinate system. Because a difference in position is required, it is important to carefully consider the problem statement, define a useful coordinate system, and accurately assign the initial and final positions. The arbitrariness of choice of power to choose an advantagous origin and direction int the selection of for your coordinates is actually dangerous in a feature of all the motion models , because too much freedom that can often be exploited to simplify calcuations, but it is important to remember that with great power comes great responsibility: failing to consciously choose a coordinate system can lead to sloppy math and an incorrect solution.