Explain briefly about the distance and the displacement

Answers (1)

Distance or Path length

  • Length of the actual path between the initial and final positions of the body.

  • E.g. Distance traveled along the circle for one complete rotation is 2\pi r

  • Tips of distance

  1. Distance is a scalar quantity.

  2. It is always positive.

  3. S.I. Unit \rightarrow meter (m).

  4. Dimension \left [ L \right ]

  5. Distance is depending on the path followed by the body .  

Displacement

  • Shortest path in between the initial and final positions.

  • Tips for Displacement.

  1. Displacement is a vector quantity.

  2. It can be positive, zero, and negative.

  3. Displacement is independent of path.

  4.  S.I. unit    \rightarrow Meter (m)

  5. Dimension  (L)

  6. Displacement \leqslant Distance.

  •   E.g.  For Semi circle

     Distance=\pi r  while Displacement =2\, r

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