The table shows the position of a motorcyclist after accelerating from rest. t (seconds) 0 1 2 3 4 5 6 5(feet) O 4.9 10.6 23.1 50.3 109.3 237.5 (a) Find the average velocity (in Ft/s) for each time period. (I) [2. 4] Ems (II) [3,4] Ems (III) [4,5] Ems (Iv) [4,6] (b) Plot the points in the table to create a graph ofs as a function of t to estimate the instantaneous velocity (in Ft/s) when t = 3. (Round your answer to one decimal place.) :] m