How far can 'x' travel at a speed of 'y' assuming 'z' external influences

[lilythmagebor]

I'm trying to determine how far a specific object can travel when ejected at a specific speed assuming specific external influences. Vague, I know, so here's the detailed question.
http://en.wikipedia.org/wiki/Cnidocyte" for more information on measuring underwater psi).
My question is, how far could the cnidocyte travel assuming it is only hindered by air pressure or underwater pressure? Can Gs even be converted into distance? Essentially, any biology aside, if a jellyfish was exposed to a stimulus to cause it to fire its cnidocytes, how far away could you be and technically be stung?

 

[DaveC426913]

Here are the http://en.wikipedia.org/wiki/Equations_of_motion#Equations_of_uniformly_accelerated_linear_motion"


final velocity v = a * t
final distance d = .5(v) * t

Don't forget to convert everything to common units, including g's.