Question

If your speedometer has an uncertainty of 2.5 km/h at a speed of 92 km/h, what is the percent uncertainty

Answer 1

2.7%

Step-by-step explanation:

Given:

Uncertainty of the speedometer (u)= 2.5km/h

Speed measured at that uncertainty (v) = 92km/h

Percent uncertainty (p) is given as the ratio of the uncertainty to the speed measured then multiplied by 100%. i.e

p =
`(u)/(v) * 100`%

p =
`(2.5)/(92) * 100`%

p = 2.7%

Therefore, the percent uncertainty is 2.7%