>>3
being up and right our +:
S = (38/3.6)*sqrt(g/240) meters is the distance from the base of the cliff.
(g = gravity acceleration)
also, the quadratic equation can be easily aquired by realising the answer above is one of 2 - simetric - roots of it.
so y = (x - (38/3.6)*sqrt(g/240)) * (x + (38/3.6)*sqrt(g/240))
there ya go