Plaque builds up on the walls of an artery decreasing itsdiameter from 1.16 cm to 0.66 cm. If the flow speed is 12.5 cm/sbefore reaching the region of plaque buildup, determine thefollowing.
(a) speed at which blood is traveling through theplaque-constricted region
  cm/s
(b) pressure change within the plaque-constricted region. (Assumethe density of blood is 1050 kg/m3. Be sure to includethe appropriate sign with your answer.)