Mackinzie walks 4 blocks west then 2 blocks south then 4 blocks east and finally 1 block south. What is the magnitude of her total displacement during this walk (in blocks)?

To determine Mackinzie's total displacement, we can analyze her movements. She walks 4 blocks west, then 4 blocks east, which cancels each other out, leaving her 2 blocks south of her starting point (after moving 2 blocks south and then 1 more block south, totaling 3 blocks south). Therefore, her total displacement is 3 blocks directly south.