Vector Subtraction Flashcards

GCSE Mathematics (Edexcel) 1MA1

Vector subtraction

The process of finding the difference between two vectors by subtracting their corresponding components.

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Terms in this set (10)

1

Vector subtraction

The process of finding the difference between two vectors by subtracting their corresponding components.

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Subtracting column vectors

To subtract column vectors, subtract the corresponding components: (a, b) - (c, d) = (a - c, b - d).

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Resultant vector

The vector obtained after performing vector subtraction, representing the difference between two vectors.

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Geometric interpretation of vector subtraction

Vector subtraction can be visualised as the vector from the tip of the second vector to the tip of the first vector.

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Negative of a vector

The negative of a vector reverses its direction. For example, -v is the same magnitude as v but in the opposite direction.

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Subtracting vectors using position vectors

To subtract position vectors, subtract the coordinates of the second point from the first point.

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Vector subtraction in component form

If u = (x₁, y₁) and v = (x₂, y₂), then u - v = (x₁ - x₂, y₁ - y₂).

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Subtracting vectors graphically

To subtract vectors graphically, place the tail of the second vector at the head of the first vector, then draw the resultant vector.

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Difference between vector addition and subtraction

Vector addition combines two vectors, while vector subtraction finds the difference between them.

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Practical example of vector subtraction

If a plane's velocity is (200, 50) and the wind's velocity is (30, 10), the resultant velocity is (200 - 30, 50 - 10) = (170, 40).

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