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Juanita studies several free-body diagrams in which a normal force is shown. what is always true about a normal force in a free-body diagram? a. it is opposite the weight. b. it is perpendicular to a surface. c. it is opposite the net force. d. it is parallel to a surface.
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Juanita studies several free-body diagrams in which a normal force is shown. what is always true abo...
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