Physics vocabulary. Force & Work
| FrontText | Kinetic Energy |
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| BackText | Energy of motion (KE = ½mv²). (动能) |
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| FrontText | Net Force |
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| BackText | The vector sum of all forces acting on an object (ΣF = ma). (净力) |
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| FrontText | Free Body Diagram (FBD) |
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| BackText | A simplified drawing showing all forces acting on an object as vectors. (受力分析图) |
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