If the contraction of the left ventricle lasts 250 ms and the speed of blood flow in the aorta (the large artery leaving the heart) is 0.76 m/s at the end of the contraction, what is the average acceleration of a red blood cell as it leaves the heart?

v₀ = initial speed of the blood = 0

v = final speed of the blood = 0.76

a = average acceleration of red blood cell

t = time of contraction = 250 ms = 0.250 s        since 1 ms = 0.001 s

Using the equation

v = v₀ + a t

inserting the values

0.76 = 0 + a (0.250)

a = 3.04

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

i think the answer is a and b

i wish you luck