(1 pt) A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 31 ft/s. Its height in feet after...

(1 pt) A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 31 ft/s. Its height in feet after t seconds is given by y=31t-11t^2 . (A) Find the average velocity for the time period beginning when t=2 and lasting (i) .01 s: (ii) .005 s: (iii) .002 s: (iv) .001 s: NOTE: For the above answers, you may have to enter 6 or 7 significant digits if you are using a calculator. (B) Based on the above results, estimate the instantaneous velocity when t=2.