What two measurements are necessary for calculating average speed?

To calculate average speed, you need two key measurements: distance and time.

Average speed is defined as the total distance traveled divided by the total time taken to travel that distance. This means if you know how far you went (distance) and how long it took you to get there (time), you can easily find your average speed using the formula:

Average Speed = Total Distance / Total Time

For example, if you drove 150 kilometers in 2 hours, your average speed would be:

Average Speed = 150 km / 2 hr = 75 km/hr

Thus, without knowing both the distance and the time, you cannot accurately calculate average speed.