Answer
Conjecture: the instantaneous velocity at at t=2 is $10.4$ m/s.
Work Step by Step
(Table in the screenshot was set up using the calculator at desmos.com)
Fill the table entries from left to right with
5.5, 7.95, 9.91, 10.351, 10.3951
The average velocity appears to approach $10.4$ m/s as the time interval gets shorter.
Conjecture: the instantaneous velocity at at t=2 is $10.4$ m/s.
