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Back to 1.3 Accuracy, Precision, and Significant Figures

1.3 Exercise 3

Avg difficulty 2.5

Perform the following calculations and express your answer using the correct number of significant digits.

(a) A woman has three bags: two of the bags weigh 13.5 pounds each, and one bag weighs of 10.2 pounds. What is the total weight of the bags?

(b) The force FF on an object is equal to its mass mm multiplied by its acceleration aa. If a wagon with mass 55 kg accelerates at a rate of 0.0255  m/s20.0255 \text{ m}/\text{s}^{2}, what is the force on the wagon? (The unit of force is called the newton, and it is expressed with the symbol N.)

OpenStax College Physics 2e, 1.3 Accuracy, Precision, and Significant Figures, exercise 3

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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.