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The coordinates of a bird flying in the are given by and , where and (a) Sketch the path of the bird between and (b) Calculate the velocity and acceleration vectors of the bird as functions of time. (c) Calculate the magnitude and direction of the bird’s velocity and acceleration at (d) Sketch the velocity and acceleration vectors at At this instant, is the bird’s speed increasing, decreasing, or not changing? Is the bird turning? If so, in what direction?
Sagot :
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