It is proved that the trajectory of an object in horizontal motion is a parabola

It is proved that the trajectory of an object in horizontal motion is a parabola

The displacement time function equation of the object is listed
There is vertical direction: H = 1 / 2GT ^ 2
Horizontal direction: VT = x
Two types of simultaneous:
h=gx^2/2v^2
It's obviously a parabolic equation