When the velocity of a body changes at a non-uniform rate, its average velocity is found by dividing the net displacement covered by the total time taken.
i.e., Average velocity = Net displacement\over Total time taken
In case the velocity of a body changes at a uniform rate, then the average velocity is given by the arithmetic mean of initial velocity and final velocity for a given period of time.
i.e., Average velocity = Initial velocity + final velocity\over 2
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| Time in (s) | Body (A) | Body (B) | Body (C) |
| 1stSecond | 20 | 20 | 20 |
| 2ndSecond | 20 | 36 | 60 |
| 3rdSecond | 20 | 24 | 100 |
| 4thSecond | 20 | 30 | 140 |
| 5thSecond | 20 | 48 | 180 |
Observe the graph carefully and answer the following questions. (i) Which part of the graph shows the squirrel moving away from the tree? (ii) Name the point on the graph which is 6 m away from the base of the tree. (ii) Which part of the graph shows that the squirrel is not moving? (iv) Which part of the graph shows that the squirrel is returning to the tree? (v) Calculate the speed of the squirrel from the graph during its journey.
