Week 2 introduces the foundational physics concepts of mechanics, vector systems, and energy transfer through the lens of systems equilibrium- a critical framework for GAMSAT Section 3. This week focuses on how ACER tests your ability to interpret physical systems using variables like force, momentum, and acceleration, and challenges you to deconstruct dynamic interactions using both qualitative reasoning and quantitative manipulation. Students will learn to apply Newtonian mechanics and vector analysis to solve problems involving inclined planes, projectile motion, and energy conservation.

The emphasis is not on memorisation, but on interpreting diagrams, manipulating formulas, and applying logical reasoning to unfamiliar physical contexts- core GAMSAT skills that are heavily weighted in ACER’s scoring system. By the end of this week, you will be equipped with the tools to decode high-cognitive-load physics problems that test both conceptual understanding and multi-step problem solving.

💡 Key Topics Covered

• Vectors and vector decomposition

• Newton’s laws of motion

• Forces on inclined planes and objects in dynamic equilibrium

• Projectile motion and parabolic trajectories

• Conservation of momentum and energy in closed systems

🧠 Core Skills Developed

• Formula manipulation: confidently working with equations for motion, force, and energy

• Variable evaluation: identifying independent, dependent, and controlled variables in dynamic systems

• Spatial reasoning: visualising vectors, angles, and force interactions in diagram-based problems

• Problem solving under load: applying systems thinking to multi-variable stems

• Diagram interpretation: breaking down ACER-style questions using annotated visual logic

🎯 Why This Is High-Yield for GAMSAT

Physics-based stems in GAMSAT often combine unfamiliar physical systems with graphical data, requiring students to use logic and variable tracking rather than recall. Systems equilibrium questions test a deep understanding of how forces interact and how energy and momentum are conserved across scenarios. Mastery of these concepts significantly improves your performance on higher-weighted ACER items, especially those involving vector analysis and applied motion.