Answer:
a
The total distance traveled is
b
The average velocity is
Explanation:
From the question we are told that
The time taken for first part
The speed for the first part is
The time taken for second part is
The speed for the second part is
The time taken for third part is
The speed for the third part is
Generally
Therefore the total distance traveled is
substituting values
Generally the average velocity is mathematically represented as
Where is the total time taken which is mathematically represented as
The average velocity is