It is a management model in which work packages (WPs) are ready for execution as soon as they are defined and depend only on their predecessor activities to be started.

This concept is called “Newtonian” because it is similar to Newton's theory of gravity, where an apple inevitably falls to the ground when it detaches from the tree. Similarly, in Newtonian Project Management, it is believed that once the scope of a project is defined and all predecessor activities have been completed, the project deliverable will simply begin execution and be completed without further delay.

However, this assumption is a fallacy. In reality, executing a project is a complex process that involves many factors in addition to the predecessor activities. Effectively managing a project requires careful planning, team coordination, resource management, risk mitigation, and more. Therefore, Newtonian Project Management is an oversimplification of the project management process that can lead to unrealistic expectations and project failures.