How is speed calculated?

Speed is defined as the rate at which an object covers distance. To calculate speed, you take the total distance traveled and divide it by the total time taken to cover that distance. This relationship can be expressed mathematically by the formula:

Speed = Distance / Time

This means that for any journey, if you know how far you traveled (the distance) and how long it took you (the time), you can easily find out your speed.

The other options do not represent how speed is determined. For instance, multiplying distance by time does not reflect the relationship of speed; instead, it would yield a unit that doesn't correspond to any standard measurement of motion. Similarly, dividing time by distance or using acceleration over distance mixes different concepts in physics without accurately describing how speed functions in this context. Understanding the formula for speed is fundamental in physics, as it lays the groundwork for more complex concepts in motion.