An artery is constricted at one location to 1/2 its normal cross-sectional area. how does the speed of blood past the constriction compare to the speed of blood flow in the rest of the artery? (note: assume ideal fluid flow.)

Speed of blood past the constriction becomes two times the speed of blood flow in the rest of the artery.

Explanation:

For an ideal fluid flow condition, the equation of continuity is applicable which means that the flow of any fluid at a given point of time at two different cross section remains same at constant density

Thus,

Substituting the given values in above equation, we get -

Thus, speed of blood past the constriction becomes two times the speed of blood flow in the rest of the artery.