Answer:
Instantaneous speed
Explanation:
Usually the speed measuring guns are used to measure the speed at a certain instant, so the measured speed is instantaneous.
The average speed is determined by the expression final distance minus initial distance divided by time
[tex]v_{aver} =\frac{x_{f}- x_{i}}{t}[/tex]
The instantaneous speed is determined in the same way as the average, but with the exception that the travel displacements are shorter (very close one each other).