where \(P\) is the pressure, \(\rho\) is the density of the fluid, \(v\) is the speed of the fluid flow, and \(y\) is the vertical position from \(y = 0\text{ m}\) (you can, of course, pick any point ...where \(P\) is the pressure, \(\rho\) is the density of the fluid, \(v\) is the speed of the fluid flow, and \(y\) is the vertical position from \(y = 0\text{ m}\) (you can, of course, pick any point to be \(y = 0\text{ m}\)---this is equivalent to picking any spot to be the zero of potential energy, but once you have picked the \(y = 0\text{ m}\) spot you must be consistent).
