A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 43 ft/s. Its height in feet after t seconds is given by y = 43t - 12t-. A. Find the average velocity for the time period beginning when t=3 and lasting .01 5: 005 5: .002 5: .001 5: NOTE: For the above answers, you may have to enter 6 or 7 significant digits if you are using a calculator. Estimate the instanteneous velocity when t=3