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

Here's the key formula:

* Work (W) = Force (F) x Distance (d)

Important points:

* Force and distance must be in the same direction: Work is only done if the force is applied in the direction of the object's motion. If the force is perpendicular to the motion, no work is done.

* Units: Work is typically measured in joules (J). Force is in newtons (N) and distance in meters (m).

Example:

* If you push a box with a force of 10 newtons (N) for a distance of 5 meters (m), the work done is:

* W = 10 N * 5 m = 50 joules (J)

Let me know if you have any other questions about work, force, or energy!