A ball is thrown upwards. What is its initial vertical speed? The acceleration

Question

of gravity is 9.8 m/s^2
and maximum
height is 4.6 m ,. Neglect air resistance.
Answer in units of m/s

Answer 1

V^2 = Vo^2 + 2g*h.
V = 0.
g = -9.8 m/s^2.
h = 4.6 m., max.
Vo = ?.

Answer 2

-90.16