Physics

Problem

A car completes a three-stage journey as shown below: Segment 1:

12\,\text{km}

15\,\text{min}

Segment 2:

8\,\text{km}

10\,\text{min}

Segment 3:

10\,\text{km}

20\,\text{min}

(i) Find the total distance travelled. (ii) Find the total time taken. (iii) Calculate the average speed of the car for the whole journey in

\text{km/h}