Question

The velocity - time plot for a particle moving on a straight line is shown in the figure

1) The particle has a non uniform acceleration 

2) The particle has turned around twice 

3) The particle has zero displacement 

4) The average speed in the interval 0 to 10 s is the same as the average speed in the interval 10 s to 20 s

Answer 1

Correct option is 4) The average speed in the interval 0 to 10 s is the same as the average speed in the interval 10 s to 20 s

The area of the v-t graph from t = 0 s to t = 10 s is the same as that from t = 10 s to t = 20 s. So, the distance covered is the same. Hence, the average speed is the same.