Eliza starts from a house and skateboards 10 meters towards the north, then turns back and skateboards 4 meters back to the south. What is Eliza 's displacement from the house?

6m

Explanation:

If Eliza starts from a house and skateboards 10 meters towards the north, her distance will be +10m (moving towards positive y direction)

If she then turns back and skateboards 4 meters back to the south, her distance will be -4m (along the negative y direction)

The displacement from the house is 10m - 4m = 6m

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