Draw a graph #v(t)# for body which is moving 15 min with a velocity of 20km/h. Then this body stops for 5 min and then continue to move again for 10 min with velocity of 25 km/h. What is the average velocity of the body?
Graph as below.
The graph of
To calculate average velocity we proceed as follows, after converting time to hours
1. Total time of travel
2. Total distance traveled