The table shows the position of a motorcyclist after accelerating from rest. t (seconds) 0 1 2 3 4 5 6 s (feet) 0 4.9 10.6 23.1 50.3 109.3 237.6 (a) Find the average velocity (in ft/s) for each time period. (i) [2,4] ft/s (ii) [3,4] ft/s (iii) [4,5] (iv) [4,6] ft/s ft/s (b) Plot the points in the table to create a graph of s as a function of t to estimate the instantaneous velocity (in ft/s) wh