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EXAMPLE 12.9 At any instant the horizontal position of the weather balloon in Fig. 12-18a is defined by x (8) ft, where t is in seconds. If the equation of the path is y/10, determine the magnitude and direction of the velocity and the acceleration when t 2 s. 10 16 ft
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2. out olk 12.8t /see dt dt 12-3se

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