Final answer:
To find Katie's displacement traveled, subtract the backward displacement from the forward displacement. Katie's displacement traveled is 7 ft in the forward direction.
Step-by-step explanation:
To find the displacement traveled by Katie, we need to consider both the forward and backward movements. Since displacement is a vector quantity that includes both magnitude and direction, we need to subtract the displacement for the backward movement from the displacement for the forward movement.
Forward displacement: 2 ft (since Katie walks 2 ft forward)
Backward displacement: -5 ft (since Katie walks 5 ft backwards)
To find the total displacement, we subtract the backward displacement from the forward displacement:
Total displacement = Forward displacement - Backward displacement = 2 ft - (-5 ft) = 2 ft + 5 ft = 7 ft.
Therefore, Katie's displacement traveled is 7 ft in the forward direction.