Question

Sara walks part way around a swimming pool. she walks 50 yards north, then 20 yards east, then 50 yards south. the magnitude of her total displacement during this walk is __________ yards.

Answer 1

|---20----|
|            |
| 50       |50
|---D--->|
Start      End

Total displacement(D)  20 yards (East).

Answer 2

her total displacement is: 20 (yards)