Question: Question 9 A particle moves on a horizontal line so that its coordinate (distance) at time t is s (t) = -+3 + 30t2 -

Question 9 A particle moves on a horizontal line so that its coordinate (distance) at time t is s (t) = -+3 + 30t2 - 225t with t > 0. (time is measured in seconds and distance in feet.) i. Find the velocity (in ft/sec) of the particle at time t = 4. ii. Find the acceleration (in ft/sec2) of the particle at time t = 4. The particle stops moving twice, once when t = A and again when t = B. (Where A

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