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Back to 1.3 Accuracy, Precision, and Significant Figures

1.3 Exercise 14

Avg difficulty 2.5

Express your answers to problems in this section to the correct number of significant figures and proper units.

(a) If your speedometer has an uncertainty of 2.0km/h2 . 0 \text{km}/\text{h} at a speed of 90km/h\text{90} \text{km}/\text{h}, what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads 60 km/h\text{60} \text{ km}/\text{h}, what is the range of speeds you could be going?

OpenStax College Physics 2e, 1.3 Accuracy, Precision, and Significant Figures, exercise 14

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.