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Double Trouble (a.k.a., Two Body Problems)
Our study thus far has been restricted to the analysis of single objects moving under…
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Free Fall Motion
As learned in an earlier unit, free fall is a special type of motion in…
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Free Fall and Air Resistance
In a previous unit, it was stated that all objects (regardless of their mass) free fall with…
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Are You Infected with the Misconception?
Two students are discussing their physics homework prior to class. They are discussing an object…
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The BIG Equation
Newton's second law of motion can be formally stated as follows: The acceleration of an…
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Newton’s Laws of Motion
Newton's first law of motion predicts the behavior of objects for which all existing forces are balanced. The…
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Determining the Net Force
If you have been reading through Lessons 1 and 2, then Newton's first law of motion ought…
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Drawing Free-Body Diagrams
Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces…
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Sliding versus Static Friction
As mentioned above, the friction force is the force exerted by a surface as an object…
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Confusion of Mass and Weight
A few further comments should be added about the single force that is a source…