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Which statement is true about drawing free-body diagrams?

  1. Drawing a free-body diagram should be the last step in solving a problem about forces.

  2. Drawing a free-body diagram helps you compare forces quantitatively.

  3. The forces in a free-body diagram should always balance.

  4. Drawing a free-body diagram can help you determine the net force.

Question by OpenStax is licensed under CC BY 4.0.
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OpenStax College Physics for AP® Courses Solution, Chapter 4, Problem 25 (Test Prep for AP® Courses) (0:16)

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This is College Physics Answers with Shaun Dychko. Drawing a free body diagram helps you determine the net force because it helps you identify all the forces you need to include in your adding and subtracting.