In a scenario where the project requirements are not expected to change and are well-understood by the development team, discuss how the Waterfall model might impact the Quality Assurance phase.

In a Waterfall model, where requirements are well-understood and not expected to change, the Quality Assurance phase can benefit from in-depth and comprehensive testing. Since the entire project is developed in a sequential manner, the focus can be on thorough testing to ensure the product meets quality standards.