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How do you subtract opposing vectors?

This tutorial will give a you a nice trick for subtracting vectors that point in exactly opposite directions.

Summary

Notes

    1. Flip the vector around by rotating 180 degrees
    1. Imagine swinging the vector with its tail in place
    1. We turned our subtraction problem into an addition problem
    1. You can add parallel vectors by just adding the lengths together
    1. Subtracting opposite vectors is like adding parallel vectors
    2. The total vector has the same direction as the positive vector, and has a length equal to the sum of the lengths