A cylindrical blood vessel is partially blocked by the buildup of plaque. at one point, the plaque decreases the diameter of the
vessel by 60%. the blood approaching the blocked portion has speed v0. 1) just as the blood enters the blocked portion of the vessel, the blood's velocity will
Explanation: This is because the same amount of blood that usually goes through will have to fit through a blocked vessel. Only a little will be able to go through at one time, causing the blood flow on the other side to slow.
(That is really dangerous. The build-up will eventually burst the vessel) Just an FYI