Consider a container filled with a liquid with a density of 1250 kg/m%. The container is open to the atmosphere at the top (point A). There is a hole in the container (point B) where the liquid flows out into the air at a steady speed . Point A is a height = 1.5 m above point B. The container is large enough that the flow out of B doesn't change the height of the liquid appreciably, so you can assume that the liquid speed at A is 0