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## Homework Statement

If a ball is thrown into the air with a velocity of 40 ft/sec, its height (in feet) after t seconds is given by

s(t) = 40t -16t^2.

Find the average velocity, vAV (t), of the ball over the time interval (t, 2), for 0 < t < 2.

## Homework Equations

change of x/change of t[/B]

## The Attempt at a Solution

Other questions were a breeze but this one stumped me. Am I just supposed to plug in 1 for t variable here? I feel like that doesn't make sense because the question before this was on the interval (1,2). I also thought maybe I should just replace the variable with the domain it has given me and write down a super long unsolved equation. Any help is appreciated thanks![/B]