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Q.

The distance-time graph of a cyclist is shown in the figure. The average speed of the cyclist in the whole journey is ____ $km / hr$ .

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Detailed Solution

The distance-time graph of a cyclist is shown in the figure. The average speed of the cyclist in the whole journey is

8 km / hr

.

Question Image

Average speed is defined as the ratio of total distance covered by a body to total time taken by the body. The total distance covered by cyclists is

40 km

and the total time taken is

5 hr

.

Average speed = \frac{total distance covered}{total time taken}

\Rightarrow Average speed = \frac{40 km}{5 hr}

\Rightarrow Average speed = 8 km / hr

The average speed of cyclist in the whole journey is

8 km / hr

.

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The distance-time graph of a cyclist is shown in the figure. The average speed of the cyclist in the whole journey is ____ km/hr.