# Activity 8.10 Class 9 Science Chapter 8 Motion

Activity 8.10 Class 9 Science Chapter 8 Motion

activity 8.10 asks us to correlate the distance-time graph of objects with different speeds.

Here we will plot distance on x-axis and time in minutes on the y-axis. Now we need to plot the given distance and time. Once we draw the line, we will get the requested graph. After this, we can interpret it easily.

Here the graph will look like this.

#### Interpretation:

• The graph is not a straight line for both. It indicates that the speed of each person changes with time. If they had the uniform speed we would have got a straight line.
• Important: Here we see two different graphs for the same distance. It indicates that both people are having different speeds. The area covered in each unit of time indicates the distance. Here it is more for Firoz till 8:20. After 8:20 the total sum of the area represents total distance. So, both, Firoz and Sania will have an equal area on the graph.

#### Interpretation:

From a graph we can know if the motion is uniform if the line is straight; the area below the slope represents the distance.

Activity 8.10 Class 9 Science Chapter 8 Motion

Ref: NCERT Class 9 Science Chapter 8.

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