Thanks! That clears things up nicely.
Here is an example posting that seems to get it wrong.
https://www.physicsforums.com/showthread.php?t=504290&highlight=fluid+velocity+pressure
Dynamic pressure, from Bernoulli's principle, for a moving fluid with a given density is
P = \frac{1}{2}\rho {v^2}
On the other hand, we can compute the force on a plate hit by that fluid from the rate of momentum transfer. Assuming that the fluid exits sideways after impact, we have...