psmarz

Ok so it is

0.8 = 9.8t²+(.5)(-9.8)(t²
0.8 = 4.9t²
.163 = t²
.4 = t


0 = v₀ - 9.8(.4)
0 = v ₀ - 3.92
3.92 = v₀


Now all I need is more than this one problem to practice lol...you are awesome, thank you, thank you, thank you.