1. Free Fall and Deceleration | Modelling vertical motion of a parachutist in segments: free fall under gravity, parachute-assisted deceleration, and constant speed descent; calculating total descent time. 2. Pulley and Connected Particles | Finding acceleration in a two-mass pulley system, applying Newton’s laws, computing time until contact with pulley, and discussing model limitations. 3. Graph Interpretation | Sketching a speed-time graph for compound motion, identifying key transitions like constant acceleration, deceleration, and terminal speed. 4. Mathematical Modelling Adjustments | Evaluating effects of including air resistance on motion time, proposing refinements such as considering variable mass or wind resistance. 5. Forces and Assumptions | Identifying simplifying assumptions in mechanics models (e.g., particles, light strings, smooth pulleys), and their effects on calculation accuracy.