How to evalutae the following?

A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 27 ft/s. Its height in feet after t seconds is given by y = 27t 27152. A. Find the average velocity for the time period beginning when t = 3 and lasting .01 s: f. .005 s: f, .002 s: i, .001 s: 9', NOTE: For the above answers, you may have to enter 6 or 7 signicant digits if you are using a calculator. B. Estimate the instantaneous velocity when t = 3. Answer: y; The displacement (in feet) of a certain particle moving in a straight line is given by 9:? (A) Find the average velocity for the time period beginning when t = 3 and lasting (i) .01 s: i, (ii) .005 s: i. (iii).002 s: a: (iv) .001 s: y; NOTE: For the above answers, you may have to enter 6 or 7 signicant digits if you are using a calculator. (B) Estimate the instantaneous velocity when t = 3. Answer: if