10. A worker covers a distance of 40 km from his house to his place of

work, and 10 km towards his house back. Then the displacement

covered by the worker in the whole trip is

The displacement covered by the worker in the whole trip is 30km.

The easiest way to solve this problem is using the displacement equation:

Δx = x₂ - x₁

A worker covers a distance of 40 km from his house to his place of

work, and 10 km towards his house back. So:

Δx = x₂ - x₁ = 40km - 10km = 30km