quadratic equation for y=height and x=time for an object being tossed into the air

[medfoe]

So how do I find the quadratic equation of an object tossed into the air from a point at y=0, if I know the beginning upward velocity and the downward acceleration caused by gravity? (time measured along the x axis, height measured along the y axis)

[realMakc]

y = y0(you said y0=0) + v0*(x - x0) (this is inertial movement) + 0.5*g*(x - x0)^2 (this is free fall movement; if y points upwards, v is > 0 and g is < 0).

"0.5" comes from integration, I don't have simple way to show why it's there at hand, but it should be possible... they did it once at school, long time ago

[medfoe]

Alright, thanks!