0. 1./1.0 Homework Progress saved Done Score: 20/34 9/17 answered Question 12 0/2 pts 5 3 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 - 18t2. A. Find the average velocity for the time period beginning when t=1 and lasting 101 s: 005 s: 002 s: .001 s: 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=1. Question Help: D Post to forum Submit