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.