The act of using a force to move an object across a distance is called work.

Here's why:

* Force: A push or pull that can change an object's motion.

* Distance: The amount of space an object moves.

Work is done when a force causes an object to move a certain distance. It's a measure of how much energy is transferred to the object by the force.

Key points:

* Work is done only when the force causes movement in the direction of the force.

* Work is a scalar quantity (it has magnitude but no direction).

* The unit of work is the Joule (J).

Let me know if you'd like to delve deeper into the concept of work!