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A particle's position is given by: $(t) = 6t^(13/6) - 4t^(9/4) + 11
Where: tis in s and S is in m. Express numerical answers in three (3) significant figures.
A. What is the average speed at the interval of t= 75.0 s and t= 85.0 s?
B. After t= 0.00 s, when does the particle change direction?
C. What is the initial velocity of the particle?

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