A ball is thrown into the air by a baby alien on a planet in the Alpha Centauri system with a velocity of 47 ft/s. Its height in feet after seconds is given by y = 47t - 12t^2.
4) Find the average velocity for the time period beginning at t = 0.5 sec and lasting for the given time:
0.1 sec:
1 = 0.2 sec
0.01 sec:
b) Estimate the instantaneous velocity when t = 0.5 sec.