9.1 Vectors in 2D

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Description and Tags

Pre-Calculus

Vectors

2D

Component Form

13 Terms

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Scalar
A quantity that is determined by only magnitude
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Vector
A quantity determined by both direction and magnitude
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Initial point
The starting point of the vector
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Terminal point
The ending point of the vector
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Magnitude
The length of the line segment of a vector
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Equal
Two vectors are considered _______ if they have equal magnitudes and the same direction
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Zero factor
Represents no displacement
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Difference
The ______ of two vectors u and v is defined by u-v=u+(-v)
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Horizontal component
X in <x,y>
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Vertical component
Y in <x,y>
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Equal
Two vectors are ______ iff corresponding components are equal
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Unit vector
A vector of length 1
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Direction
The ______ of v is theta, the smallest positive angle in standard position formed by the positive x-axis and v