Question

calculate the average speed of blood flow in the major arteries of the body, which have a total cross-sectional area of about 2.2 cm2 .

Answer 1

The average speed of blood flow is 0.001395m/s².

Given-

Cross sectional area (A) is 2.2cm²

To standardize the value in terms of SI unit , converting cm² to m² is relevant. In Physics System International Units are used for accuracy.

A= 2.2 cm² = 2.2 x 10⁻²m²

Cleansing effect of arteries have their each cycle of work.

This takes 60seconds.

Mathematically, $Speed= \frac{distance}{time}$

A= 2.2 x 10⁻²m²= cross sectional area of cylinder.

$\pi R^2= 0.022 m^2\\\\3.14R^2=0.022 m^2\\\\R^2= \frac{0.022 }{3.14}\\ \\R^2=0.007006369\\\\R=\sqrt{0.007006369} \\\\=0.08370m$

$Speed=\frac{0.08370}{60} = 0.001395m/s^{2}$

To learn more about average speed -

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