In which units is speed typically measured?

Speed is typically defined as the distance traveled per unit of time, which is represented by the formula speed = distance/time. Therefore, the correct representation of speed involves measuring the distance (such as meters) and the time (such as seconds) together in a way that expresses how much distance is covered in a specific amount of time.

For example, in the metric system, speed is often measured in meters per second (m/s), which directly illustrates this relationship. This is why the correct answer indicates that the measurement of speed corresponds to the concept of distance divided by time.

Other options do not accurately represent the measurement of speed. For instance, measuring in seconds per meter would imply an inverse relationship and does not conform to the practical understanding of speed. Similarly, meters per second squared is a unit of acceleration, which considers change in velocity over time, rather than simply speed. Lastly, decibels per meter measures sound intensity levels in relation to distance, which again is unrelated to the concept of speed as defined in physics.