# Thread: [SOLVED] Physics problem

1. ## [SOLVED] Physics problem

The left ventricle of the heart accelerates blood from rest to a velocity of +26cm/s. (a) if the displacement of the blood during acceleration is +2.0cm,determine its acceleration(in cm^2).(b) how much time does it take for the blood to reach its final velocity?

Anyone know how to determine the acceleration in cm/s^2

2. (a) $v_{f}^2 = v_{i}^2 + 2ad$

We know it's initially at rest, its current velocity, and displacement. Just a matter of simple algebra to solve for the acceleration.

(b) After having solved for the acceleration, use: $v_{f} = v_{i} + at$ and solve for t.

3. what equation did you rearrange to get that one?

4. Originally Posted by john doe
what equation did you rearrange to get that one?
They are both standard equations for straight line motion under constant (uniform) acceleration. You're expected to be familiar with them. Consult your class notes and/or textbook.

5. thats weird im not even aware of that one

so far ive learned

and

along with the change in average vel and acc

but i did check on the internet for the equations and i see were you got in from, thank you for posting