Machines can change the __________ over which the ___________ is applied to an object.

The correct answer emphasizes the ability of machines to modify the characteristics of the work being performed on an object. Machines can alter the distance over which a force is applied to an object. For example, in the case of an inclined plane, by extending the path and lowering the angle, the distance over which a force is exerted is increased, which in turn makes it easier to lift an object to a certain height. This principle is fundamental to understanding how simple machines, such as levers, pulleys, and ramps, function in aiding the application of force. By changing the distance, machines accomplish work more efficiently, allowing for less effort to be required over a larger distance.