The left ventricle of the heart accelerates blood from rest to a velocity of +26 cm/s.

(a) If the displacement of the blood during the acceleration is +1.9 cm, determine its acceleration (in cm/s2).
(b) How much time does it take for the blood to reach its final velocity?

2 answers

(a) Vfinal = sqrt(2aX)
a = Vfinal^2/(2X) = 178 cm^2/s

(b) T = Vfinal/a = 0.15 s
d = v * t,
1.9cm = 26cm/s * t,
t = 1.9/26 = 0.073 sec.
Acc. = (Vt - Vo) / t = (26cm/s - 0) / 0.073s = 356.2cm/s^2