These examples highlight how work in science is defined by the application of force over a distance, emphasizing the transfer of energy in mechanical processes.

Each situation involves the exertion of force to cause displacement, aligning with the scientific definition of work as the product of force and distance.

Lifting a book involves exerting force against gravity to move it vertically, meeting the criteria for work as force applied over a distance.

By pulling a trolley, you exert force to displace it, demonstrating the application of work as force acting over a distance.

When you push a pebble, you exert a force over a distance, causing the pebble to move, thus fulfilling the definition of work in physics.