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**Speed** describes how an object's position changes over time. Its unit, the meter per second (m/s) is one of the fundamental SI units. In practice, units such as kilometers per hour (km/h, kph) or the miles per hour (mph) are also commonly used. When comparing the speed of a snail and an ant, it's clear that the ant covers the same distance in less time than the snail, meaning the ant moves at a greater speed. In the second scenario, both the ant and the snail are placed on a conveyor belt. By observing the white strip on the belt, the faster movement of the ant can be seen, indicating its higher speed on the belt.
