If a distance-time graph has a straight line from (0,0) to (4,20), what is the speed and its units?

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Multiple Choice

If a distance-time graph has a straight line from (0,0) to (4,20), what is the speed and its units?

Explanation:
On a distance-time graph, the speed is given by the slope of the line—the change in distance divided by the change in time. The line goes from (0,0) to (4,20), so the rise is 20 m and the run is 4 s. Slope = 20 m / 4 s = 5 m/s. Since the line is straight, the speed is constant. The graph shows 20 metres covered in 4 seconds, which matches a speed of 5 m/s.

On a distance-time graph, the speed is given by the slope of the line—the change in distance divided by the change in time. The line goes from (0,0) to (4,20), so the rise is 20 m and the run is 4 s. Slope = 20 m / 4 s = 5 m/s. Since the line is straight, the speed is constant. The graph shows 20 metres covered in 4 seconds, which matches a speed of 5 m/s.

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