Vectors

What this lesson shows

A vector is an arrow: it has a direction, and a length. This one goes 3 across and 2 up. Write it as 3, 2. What happens when arrows ADD?

Try it yourself

Real questions from this lesson's worksheets — answers below each one.

1. Magnitude of vector (3, 0)
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   3
2. Add the vectors: (1, 1) + (1, 2)
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   (2, 3)
3. A robot moves (1, 1) then (1, 1). Where does it end up, as a vector from the start?
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   (2, 2)
4. For (1, 3) + (2, 2), what is the x-component of the sum?
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   3