(a) The car’s average acceleration for the first motion is 5.08 m/s².
(b) The car’s average acceleration when it stops is -6.18 m/s².
The average acceleration refers to the rate at which the velocity changes.
The car’s average acceleration is calculated as follows;
a = v/t
a = (44.7 m/s ) / (8.8 s)
a = 5.08 m/s²
a = v - u /t
where;
when the car stops, v = 0
a = (0 - 34 m/s) / 5.5 s
a = -6.18 m/s²
Thus, the car’s average acceleration for the first motion is 5.08 m/s².
The car’s average acceleration when it stops is -6.18 m/s².
Learn more about average acceleration here: https://brainly.com/question/26246639
#SPJ1