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14、Guillermo Trevio Access.The future of education.OpenStax.org I like free textbooks and I cannot lie.Give$5 or more to OpenStax and well send you a sticker!OpenStax is a nonprofit initiative,which means that every dollar you give helps us maintain and grow our library of free textbooks.If you have a
15、few dollars to spare,visit OpenStax.org/give to donate.Well send you an OpenStax sticker to thank you for your support!Table of ContentsPreface .11 Introduction:The Nature of Science and Physics.5Physics:An Introduction .6Physical Quantities and Units .13Accuracy,Precision,and Significant Figures.20
16、Approximation .242 Kinematics.31Displacement.32Vectors,Scalars,and Coordinate Systems.35Time,Velocity,and Speed .36Acceleration .40Motion Equations for Constant Acceleration in One Dimension .49Problem-Solving Basics for One-Dimensional Kinematics .59Falling Objects .61Graphical Analysis of One-Dimensional Motion .693 Two-Dimensional Kinematics.89Kinematics in Two Dimensions:An Introduction .90Vector Addition and Subtraction:Graphical Methods.93Vector Addition and Subtraction:Analytical Methods.
