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Suppose the two photographs, shown in the below figures, had been taken at an interval of 10\ seconds. If a distance of 100\ metres is shown by 1\ cm in these photographs, calculate the speed of the fastest car.
Cars moving in a road
Position of cars in the road after 10 seconds
From the given images, it is clear that the distance covered by the car from one horizontal white strip to another is measured using a scale. Suppose, the scale reading is 2\ cm then, it is equivalent to .
The formula for the speed is given as
On substituting the given values in the formula, we get the speed as .
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