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CSCA PhysicsChapter 1: MechanicsIntermediate

Work, Energy & Mechanical Conservation

功、功率与机械能守恒定律 · Node 1.3

Work done by constant and variable forces, power equations, work-energy theorem, and mechanical energy conservation.

Chapter Weight: 35% of official examination
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Core Mathematical Axiom

Formula Proof & Traps
W=Fscosθ,P=tW​=Fvcosθ,Wnet​=ΔEk​,Ek1​+Ep1​=Ek2​+Ep2​
CSCA Exam Trap Alert

Forgetting the negative sign for work done by opposing resistance forces or friction.

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