Understanding Displacement
Displacement is a vector quantity that refers to the change in position of an object. It is defined as the shortest distance from the initial to the final position, along with the direction. While it can be zero under specific conditions, there are key reasons why it generally isn't.
1. Definition of Displacement
- Displacement measures the straight-line distance between the starting and ending points of an object's motion.
- It accounts for direction, distinguishing it from distance, which is scalar and only measures the length of the path traveled.
2. Conditions for Zero Displacement
- Displacement can only be zero when the initial and final positions of an object coincide.
- For example, if an object moves in a circular path and returns to its starting point, the displacement is zero.
3. Real-World Scenarios
- In most movements, such as walking from one point to another, the initial and final positions differ, resulting in a non-zero displacement.
- Even if an object returns to its original position after various movements, the path taken may not negate the total distance traveled.
4. Importance of Non-Zero Displacement
- Non-zero displacement is crucial in understanding motion dynamics, as it indicates a change in position.
- It plays a significant role in calculations involving velocity, acceleration, and other physical concepts.
Conclusion
In summary, while displacement can theoretically be zero, it is not a common occurrence in everyday movement. Understanding displacement's properties is essential for comprehensive knowledge in physics, especially in the context of UPSC examinations.

It can be zero if the body returns to its starting point