Question

2. (20 pts) SHOW YOUR WORK ! -4 -3 -2 -1 0 1 The position, s (t), of an object moving along a horizontal line (see the figure above) is given by s(t) = t - 2. (I) Mark the position of the object at the time t = 1 on the line above. s (1) = 12 - 2 = -1 - -- -4 -3 -2 -1 1 2 3 4 (II) Find the average velocity, VAV, of the object during the time interval [1, 3]. VaV = - s (3) - s (1) 32 - 2 - (12 - 2) 3-1 3-1 (III) Compute the average velocity, VAV (t), of the object during the time interval (a) [1, t], for t > 1; 1 s - 1 (t) -s (1)t2 - 2 - (-1) t- l t -1 (t-1) (t + 1) =t+1, t>1. t - 1 (b) [t, 1], for 0