Question
Find the average velocity of particle from displacement time graph?

Solution
Average velocity of a particle is defined as the ratio of total displacement to the total time taken.
From graph the particle undergoes displacement of (X2-X1) in time (t2 - t1).
Hence, average velocity is the slope of chord joining the two points on displacement-time graph.
From graph the particle undergoes displacement of (X2-X1) in time (t2 - t1).
Hence, average velocity is the slope of chord joining the two points on displacement-time graph.