Question

a turtle accelerates from a stop at 3m/s squared to the south for 8s what is the turtles final velocity

Answer 1

He's accelerating at 3 m/s² . 

That means his speed is increasing by 3 m/s every second.

At the end of 8 seconds, his speed is (8 x 3 m/s)  =  24 m/s .

He's been moving south for the whole 8 seconds.
So at the end of that time, his velocity is

                         24 m/s south .