Suppose that a baseball is tossed up into the air at an initial velocity 30 m/s. The height of the baseball at time in seconds is given by ℎ()=30−4.9^2 ​​(in meters).

a) What is the average velocity for [1,1.5]

​b) What is the average velocity for [1,1.25]

c) What is the average velocity for [1,1.1]