What is the formula for finding the velocity of water?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
For fluid flow through pipes or channels, use the continuity equation:
v = Q/A
where Q is volumetric flow rate and A is cross-sectional area.
For water exiting from a tank at height h (Torricelli's theorem):
v = √(2gh)
Example: Water in a tank 5 meters above the outlet exits at v = √(2 × 9.8 × 5) = √98 ≈ 9.9 m/s.
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