Enter the initial and final positions into the calculator to determine the average displacement of an object. The calculator will provide the average displacement, which is the straight-line distance between the two positions.

Average Displacement Formula

The following formula is used to calculate the average displacement:

D = S_f - S_i

Variables:

  • D is the average displacement (meters)
  • S_f is the final position (meters)
  • S_i is the initial position (meters)

To calculate the average displacement, subtract the initial position from the final position.

What is Average Displacement?

Average displacement is a vector quantity that represents the change in position of an object. It is the shortest path between the initial and final positions of the object, often represented as a straight line. Displacement takes into account the direction of movement and is not the same as distance, which is a scalar quantity and does not involve direction.

How to Calculate Average Displacement?

The following steps outline how to calculate the Average Displacement.


  1. First, determine the initial position (S_i) in meters.
  2. Next, determine the final position (S_f) in meters.
  3. Use the formula D = S_f – S_i to find the average displacement (D).
  4. Finally, calculate the Average Displacement (D) in meters.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Initial position (S_i) = 5 meters

Final position (S_f) = 20 meters