What is the displacement of a person who walks 2km East then 2km North then 2 km west and then 2 km south?
Correct answer: A. 0 km
- A. 0 km
- B. 8 km
- C. 4 km
- D. None of these
Explanation
The correct answer is Option A: 0 km. Displacement is the straight-line distance from the starting point to the ending point, along with the direction. In this case, the person walks in a complete loop back to the starting point, resulting in a displacement of 0 km. Option B incorrectly identifies 8 km as the displacement, which is actually the total path length or distance traveled. Option C suggests 4 km, which is incorrect as the net change in position is zero. Option D suggests that none of the options are correct, which is inaccurate since Option A is indeed correct.
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