How to Score 90+ in CSCA Physics: Models, Diagrams & Units (2026)

CSCA Physics leans on standard problem models — block-on-a-ramp, circuits, gas processes — rather than deep university theory. Students stuck in the 70s usually know the physics; they lose points on diagrams, units and pacing. This is the playbook for 90+. Chemistry students: the same weight-first logic applies — see Mechanisms Over Memorization.

Study by weight: Mechanics first

Mechanics (kinematics, Newton's laws, energy, momentum) carries roughly a quarter of the paper, followed by Electromagnetism and Modern Physics at around a fifth each, with Thermodynamics and Optics rounding it out. Allocate study hours in that ratio — most students do the reverse. See what each module demands in the physics syllabus.

Diagram-first solving

Draw forces, fields, rays and boundaries before writing any equation. Most mechanics and optics items are solved the moment the diagram is labeled — misread diagrams cause more 90-to-75 drops than missing formulas. Practice this habit in untimed drills until it is reflex, then protect it under the timer in timed sets. If pacing still collapses, fix it with the 75-second rule.

Units and clean numbers

Examiners pick numbers that simplify — g ≈ 10, simple ratios, clean fractions. Convert to SI first (kg, A, K), then check every answer's units; a 10-second units check catches most calculation slips.

Reconstruct, don't memorize

Understand how formulas derive from base principles so you can rebuild them under pressure. Log every miss by cause in your Mistake Book and confirm the trend on your progress dashboard before exam day. Most 90-to-75 drops are misreads — the mistakes list ranks them by cost.