(Answered) The displacement in meters of an object moving in a

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The displacement (in meters) of an object moving in a straight line is given by s = 1 + 2t + t2/4, where is measured in seconds.

(a) Find the average velocity over each time period.

(i) [1, 3] (ii) [1, 2]
(iii) [1, 1, 5](iv) [1, 1, 1]

(b) Find the instantaneous velocity when t = 1.

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