That is known as average speed.
Speed or velocity.
The word for the rate in time and distance at which a force is produced is "power." Power is the measure of how quickly work can be done by a force, and it is calculated by multiplying force by distance divided by time.
Power is the rate of performing work on an object. Mathematically, power = work divided by time =force x distance divided by time.
Think of the word DISTance and you have the formula D Is S times T Distance equals Speed x Time from which you can infer that Speed equals Distance divided by Time and Time equals Distance divide by Speed So in this example How long? means find the Time, and Time = Distance/Speed which equals 960miles divided by 55mph = 17hours 27minutes 16.36363636.....seconds What about stopping for coffee or a rest?
Mean!
work/time = power
The overall rate of speed an object moves is determined by the distance it travels over a certain period of time. This can be calculated by dividing the total distance traveled by the total time taken to travel that distance.
Perimeter
The word that means distance traveled per unit time is "speed." Speed is a measure of how quickly an object moves from one place to another, expressed as the distance traveled per unit of time.
Speed is the magnitude of velocity, or the rate of change of distance.
'Mean' in this context means 'average'. Thus, 'mean word length' means 'average word length'. This is the total number of letters in your piece of writing, divided by the total number of words. Here is a very simple example: "My pet rabbit likes peas." Total number of letters = 20, total number of words = 5, 20 divided by 5 = 4, mean word length = 4. Mean word length is one of the factors used to determine the readability of a piece of writing.
Per (followed by a time unit). For example, "per second" or "per day".