Understanding the Concepts

* Work: Work is done when a force causes an object to move a certain distance. It's calculated as the product of force and displacement.

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

* Displacement: The change in an object's position.

Formula

Work (W) = Force (F) x Displacement (d)

Calculations

* Force (F) = 3.4 Newtons

* Displacement (d) = 12.4 meters

Work (W) = 3.4 N * 12.4 m

= 42.16 Joules (J)

Answer

The work done when a 15-kilogram object is moved 12.4 meters by a force of 3.4 Newtons is 42.16 Joules.