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(Thought question: ) If one three dimensional point is subtracted from another, is the result a vector?

Answer:

Yes. These ideas work in 3D as well as 2D.


Practice with Displacements

Two ants on a grid

It would be a pity to be talking about math without a story problem.

Amy the ant at point (8, 4)T is lost. Find a displacement that will bring her to her friend Emily at (2, 2)T.



QUESTION 18:

Through what displacement should Amy move to find her friend Emily?

( )T