2-56.  According to coordinate frame A (Figure 2-32), a sparrow flies from x = 2 m to x = 5 m at constant speed. Which of the following quantities change if we consider things from the point of view of coordinate frame B? The sparrow's initial position, the sparrow's final position, the sparrow's displacement, the sparrow's velocity. Explain.

Figure 2-32  Problem 2-56

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