As there are the 100m, 200m, 400m, 1500m 10,000m races, I think metres is a good measurement to use.
Track races are normally run round a 400m track, so the longer races are measured using a count of 400m laps, for example 1500m is 3 3/4 laps of a 400m track.
The one exception could possibly be the marathon which is not run around a track and which at 26 miles 385 yards is about 42195m = 42.195km and kilometres would be a better measurement.
The measurement to use is meter per hour, minutes, and seconds.
Metres per second would be used to measure the speed you were running at. The time it took you to run the 10 metres would be measured in seconds.
Miles or Kilometers. A marathon is about 42.1 kilometers or 26.2 miles.
You could use inches, feet, yards, miles, nautical miles, centimeters, meters, kilometers, etc., depending on the length of the race you are measuring.
Metres, unless you happen to be a serious runner. In the latter case, kilometres.
Miles or kilometers.
Meters.
Mile
Millimeter
Yard
This is mathematically known as slope or "rise/run".
500 metres is 0.31 miles: whether that distance is covered in a nanosecond or over a period of years.
Average speed = distance covered / time taken > SI units: metres per second (m/s)
How much you walk
Yard
Measure the total distance travelled (d) over a period of time (t). Then, the average speed is d/t in the appropriate units.
I'm sorry, but what you ask is not logical. Speed/Velocity is the measure of change in distance over a period of time.
Speed is the measure of distance over time.
I am not sure how you would do that. However, it is relatively simple to set up an experiment to show that velocity (over a period of time) affects distance. Select an object whose velocity can be changed from one constant value to another. Alternatively, select a set of objects that can travel at different, but constant, velocities. Measure the distance travelled by each object in the chosen time period (or have a race).
speed
wave speed
Average speed over a period of time = (distance covered in a period of time) divided by (time it took to cover the distance).
It depends.
To measure the average speed you would need to divide the distance over time
This would be the slope or the gradient.
The product of the force and the distance is called "work". It is equivalent to a transfer of mechanical energy.