Vectors in Two Dimensions (Grade 11 NSC Matric Physical Sciences): Quizzes

Parts of a vector in specific directions

$R_x = R \cos(\theta)$

$R_y = R \sin(\theta)$

Counter-clockwise from positive x-axis

x-component negative, y-component positive

Add all x-components, then all y-components

$R = \sqrt{R_x^2 + R_y^2}$

216.5 N

$\theta = \tan^{-1}(\frac{R_y}{R_x})$

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