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Karl Semich 0xloem at gmail.com
Fri Jun 17 12:39:49 PDT 2022


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parabola solving.

p_y(t) = 0 + vy * t - g t^2 / 2
p_x(t) = 0 + vx * t

quadratic equation for p_y(t_f) = 0.
ax^2 + bx + c
a = -g
b = vy

(t_0, t_f) = [-b +- sqrt(b^2 - 4ac)] / 2a


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