If anyone can help I have a puzzle I'm stuck on . it's a venturi problem My son asked me for his class and even I am having a tuff time figgering it out the puzzle is . the airflow in a venturi tubbe has a velocity of 200ft/sec in the wider part where the cross sectional aera is 3 sq ft and the tube narrows down to an aera of 2sq ft. the air density is 0.002378 slugs/sq ft what is the velocity at 2 sq ft. section and what is the dynamic pressure at this point. I have been stuck for two days so now looking to see if anyone knows a formula . thanks