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Solve Quadratic Equations by Factorization or Formula
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Linear Simultaneous Equation
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Equations of Constant Acceleration (5 SUVAT)
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Distance - time Graph (Gradient)
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Velocity - time Graph (Gradient, Area)
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Pythagoras' Theorem
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Trigonometry of Right-angled triangles
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Sine Rule and Cosine Rule
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Given one Trig Ratio, finding others
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sine^2 x + con^2 x (trig identity)
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tan x = sine x / cos x
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Definition of Force, F=ma
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Reaction of Force or Normal
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Resolution of Forces (Triangle Law of Vectors Addition)
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Direction choices are usually Horizontally and Vertically, Parallel and Perpendicular to slope, or Parallel and Perpendicular to direction of motion
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Resolving perpendicular to an unknown force means the unknown will not appear in the equation.
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When direction of acceleration is unknown, it is normally best to find components of a resultant force and use them to find direction of magnitude of resultant.
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Force resolution and Newton Second Law
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Limiting Friction and R, mu
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Total contact force is the combination of normal contact force and friction
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If situation becomes different because a force a force changes or direction of motion switches, the normal contact force may be affected, so the friction may change. It is best to draw a new diagram every time a different situation arises.
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Resolve forces in equilibrium and deal with non-equilibrium problems.