The characteristics of distance-time graph for a non – uniform speed are:
(i) It is always a curve (parabola).
(ii) The speed of the moving object at any point is given by the slope of the tangent to the curve at that point.

The characteristics of distance-time graph for a non – uniform speed are:
(i) It is always a curve (parabola).
(ii) The speed of the moving object at any point is given by the slope of the tangent to the curve at that point.

| 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.