A car increases its velocity from 7.8 m/s to 11.4 m/s with constant acceleration. The average velocity of the car is m/s. (Round to

nearest tenth digit.)

Explanation:

step one:

The average velocity is equal to the summation of all velocities divided by the number of velocities

step two:

since we have two velocities in the question

v1=7.8m/s

v2=11.4m/s

step three:

average velocity is = (v1+v2)/2

Average velocity= (7.8+11.4)/2

Average velocity= 19.2/2

Average velocity= 9.6m/s

step four:

now we have to round the answer to the nearest tenth which is

10m/s

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.