Question

Writing algorithm of gravity. Gravity works properly, but when i add vertical motion it seems to mess up.
(code: (v * t) - (0.5f * g) * (float)Math.Pow(t, 2) where t is time, g is gravity(-9.8) and v is vertical motion)

Answer 1

the equation works however the results are upside down.

Answer 2

Because you had a minus in your equation of motion as well as in your definition of \(g\). Do only one or the other.