w\" 'H' | 'J A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 20 ft/s. Its height in feet after t seconds is given by y = 20t 28t2. ' a) Find the average velocity over the time interval [2, 2 + h] where h. is given as follows: This first interval is [2, 2.1]. k b) Estimate the instantaneous velocity when t = 2 S ft/s Question Help: [3 Video Submit