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

A good answer might be:

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


Practice with Displacements

 

 

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?