he maximum acceleration of blood in the aorta can be used to test the ventricular ?
function. The period during which maximum acceleration of the blood in the aorta occurs is during the first portion of the left ventricle's pumping action. During this period, the acceleration is essentially constant. Doppler echocardiography uses ultrasound to measure blood speeds in the aorta. The results for one patient show that the blood in the aorta begins at a speed of 0.10 m/s and undergoes constant acceleration for 38 ms, reaching a peak speed of 1.29 m/s. (a) What is the magnitude of the acceleration over this time interval? (b) How far does blood travel during this period?
- AshLv 75 months ago
a = (v-u)/t = (1.29 - 0.10)/(0.038) = 31 m/s²
s = (v²-u²)/2a = (1.29² - 0.10²)/(2*31) = 0.027 m or 27 mm