When water moves from a larger pipe into a smaller pipe it speeds up which I think everyone will agree. Is the pressure of the faster moving water in the smaller tube greater than the same area/volume of water in the larger pipe? Many refer to the force equation and Bernoulli's principle. Some say the pressure coming out of the smaller tube is less than the same area or volume of water in the larger tube. I'm not sure how this can be unless the remaining volume of water in the larger pipe surrounding the area or volume of water in question places pressure on the that volume of water or if there is some other reason. I'd rather be hit by a truck moving at 5 mph than the same truck moving at 50 mph. Then again, I'd rather not be hit by a truck at all.