Speed

Speed explained in an easy to understand way:

Imagine you're trying to finish a jigsaw puzzle before dinner. Just like how the puzzle pieces need to fit together within the time you have, speed is about how much distance an object covers within a certain time frame. In this analogy, each puzzle piece represents a unit of distance, and the time before dinner is your unit of time, so completing the puzzle efficiently is akin to an object traveling quickly, as both require maximizing progress within a limited time.