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How do you subtract two parallel vectors?

In this tutorial you will learn a shortcut for subtracting parallel vectors.

Summary

  1. In subtracting parallel vectors, just subtract the lengths
  2. The new vector points in the direction of the bigger vector

Notes

    1. The total vector will be parallel to the two parallel vectors
    1. Rotate the vector 180 degrees to flip it to the negative
    2. Now the 25 vector and the -10 vector are opposite, so we just need to add these opposite vectors
    1. When you subtract the lengths, you get -15, so the total vector points in the negative direction and has a length of 15