Question

The blood leaving the aorta reaches the circle of Willis, a collection of arteries that supplies blood to the brain. Assume that it takes 600 ms for blood to reach the circle of Willis and that its average velocity is reduced to 61 cm/s. What is the average acceleration experienced by the blood?

Answer 1

Option D

Step-by-step explanation:

Please see the attached image for initial velocity and the options for this question are

A.−67.0 cm/s2

B.−0.670 cm/s2

C.0.670 cm/s2

D.67.0 cm/s2

Solution

Acceleration is the rate of change of velocity or speed.

Mathematically it can be represented as

`da = (dv)/(dt)`

where a represents the acceleration, v represents the velocity and t represents the time taken.

Given

time is equal to
`600` ms

or

`0.6` seconds

Substituting the given values in above equation we get

`a = (101-61)/(0.6) \\= 66.67 (m)/(s^2)`

Hence, option D is correct