Huge cylindrical tank of height h standing of the ground is filled with water up to the top. Three holes are made in the wall of this tank: A at the height ¾ h from the ground; B at the height h/2 from the ground and C at the height ¼ h from the ground. Rank this holes in accordance to velocity of water running from the, greatest first.
Use Torricelli's law. The holes towards the bottom of the tank have a higher column of water above them, therefore more pressure at that point, which means water will come out faster.
