Question

(a) If your speedometer has an uncertainty of at a speed of $90 \textrm{ km/h}$, what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads $60 \textrm{ km/h}$ , what is the range of speeds you could be going?

a) $2.2%$

b) $59 \textrm{ km/h}$ to $61 \textrm{ km/h}$

Solution Video