Question #df915
1 Answer
Simply add the uncertainty to your 55 kmh then subtract it.
Explanation:
The uncertainty figure shows you the maximum and minimum velocity:
55 - 0.94 = 54.06 km/h
55 + 0.94 = 55.94 km/h
Incidentally, the typical uncertainty on a speedometer is nearer 10% due to the allowable differences in tyre pressure affecting rolling radius.
