Physics

Physical Science paper 1

The material and recordings for each session is available below.

Work, Energy and Power

Session 1: 07 May 2025

This Grade 12 physics session covers key concepts in Work, Energy, and Power, with a strong focus on solving problems using free body diagrams, Newton’s laws, energy principles, and multiple solution methods. Real-world examples—such as blocks on inclined planes and pendulum collisions—are used to demonstrate different strategies for arriving at the same answer. The session encourages independent problem-solving and includes detailed walkthroughs of various approaches, preparing learners for exam-style questions.

Session 2: 14 May 2025

This lesson focuses on the key Grade 12 Physics concepts of Work, Energy, and Power, with practical problem-solving using scenarios such as a bullet-block collision, skateboarder on a ramp, and a motor-powered lift system. Learners are guided through applying the work-energy theorem, understanding conservation of momentum, and calculating average power. The session also highlights the importance of direction and sign conventions in force and energy problems, building strong foundations for exam preparation.

Notes & Resources

Doppler effect

Session 3: 21 May 2025

This session explores the Doppler Effect in depth, covering sound and light wave applications relevant to Grade 12 CAPS Physics. Real-world scenarios—like sirens, ambulance motion, and spectral shifts in astronomy—are used to explain how relative motion affects observed frequency. Learners are guided through key calculations, graph interpretation, and the correct use of the Doppler equation when the source and observer are moving. The session ends with tips for graph-based questions and a preview of upcoming topics.

Notes & Resources

Session 3

Date: 21 May 2025