  In this paper, I introduce general equation of conics sections based on
physical problem on the earth surface in [1]. The conics sections here
(hyperbola and ellips) are generated by all maximum points of parabolas. Based
on it, I derived them to calculate the velocity and kinetic energy for
different types of conics. The main results showed that there is imaginary
velocity if type of conics is hyperbola for r=0, but kinetic energy never be
imaginary, only be negative value if r=0. Mean while, if types of conics is
ellipse, then the velocity is real and kinetic energy always be positive. It is
mathematically unique because only imaginary mass based on special relativity
that can produce negative energy
