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1.3 Exercise 8

Avg difficulty 2.5

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

(a) A car speedometer has a 5.0%5.0 \% uncertainty. What is the range of possible speeds when it reads 90km/h\text{90} \text{km}/\text{h}? (b) Convert this range to miles per hour. 1 km=0.6214 mi\left(\text{1 km} = \text{0}.\text{6214 mi}\right)

OpenStax College Physics 2e, 1.3 Accuracy, Precision, and Significant Figures, exercise 8

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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.