Solution

Water flows through a horizontal pipe with a velocity of $3\,\mathrm{m\,s^{-1}}$ and pressure of $200{,}000\,\mathrm{Pa}$ at point $1$. At the nozzle (point $2$), the pressure decreases to atmospheric pressure $101{,}300\,\mathrm{Pa}$ and the velocity increases to $14\,\mathrm{m\,s^{-1}}$. Calculate the velocity of the water exiting the nozzle. (Density of water $= 1000\,\mathrm{kg\,m^{-3}}$)