Difficulty: Easy
Correct Answer: 15 m. East
Explanation:
Introduction / Context:
We translate each leg into axis moves and then compute the net displacement and bearing relative to the starting point.
Given Data / Assumptions:
Concept / Approach:
Use coordinates: East +x, West −x, North +y, South −y. Add vector components and interpret the result.
Step-by-Step Solution:
After 15 m South: (0, −15).After 15 m East: (15, −15).After 15 m North: (15, 0).Distance from origin = 15 m; direction = East.
Verification / Alternative check:
South and North cancel, leaving only 15 m East.
Why Other Options Are Wrong:
Any South/West options contradict the computed positive x displacement; 30 m East overstates the distance.
Common Pitfalls:
Applying left/right incorrectly (left from South is East, not West).
Final Answer:
15 m. East
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