Sally lives on a square block that is 220 yards per side, and in the evenings, she walks with her dog around the block. If Sally walks once around the block, what is her final displacement?

Answer 1

To determine Sally's final displacement after walking around the square block, we first need to understand what displacement means. Displacement is defined as the shortest straight-line distance from the starting point to the final point.

Since Sally walks around a square block and returns to her starting point after one complete lap, her starting and ending points are the same. Therefore, regardless of the distance she walked, her final displacement is:

\[ \text{Final Displacement} = 0 \text{ yards} \]

So, after walking once around the block, Sally's final displacement is 0 yards.