Draw a diagram of the displacement that includes a grid with labeled axes and the displacement vector. If the motion is in two directions, label the vertical dimension as "y" and the horizontal dimension as "x." Draw your vector by first counting the number of spaces displaced in each dimension, marking the point at the appropriate (x, y) position, and drawing a straight line from the origin of your grid (0,0) to that point. Draw your line as an arrow indicating the overall direction of the motion. If your displacement requires more than one vector to indicate intermediate changes in direction, draw the second vector with its tail beginning at the head of the previous vector.

Resolve the vector into its components. So, if the vector is pointed at the (4, 3) position on the grid, write out the components as:

The x and y with the "^" symbol above them indicate the direction of displacement via the directional unit vectors.

Take the sum of the square of each vector component. For the example in Step 2, we would have:

Take the square root of the result from Step 4. For our example, we get:

This is the value that tells us that when we have moved a total of 4 units in the x-direction and 3 units in the y-direction in a single straight line, we have moved a total of 5 units.