Work done by a force is indeed equal to the sum of the work done by its components, as demonstrated through the scalar product of force and displacement. When a force F acts on an object over a displacement d, the total work can be calculated using the formula W = F · d, which incorporates the angle between the force and displacement vectors. For instance, if force F is broken down into its x and y components, the work done by each component can be calculated separately and summed to yield the total work done. This principle holds true in both one and two-dimensional scenarios, confirming that the work done by a force is additive. Understanding this concept is crucial for analyzing forces in physics.