Third lesson of the ‘Work, energy and power’ topic for the first year of the AQA A-Level Physics course. Covers: Physical quantities involved in power How power is generated going up stairs Why devices are more powerful than others Fully resourced and with practice exam questions (with worked answers).

Fourth lesson of the ‘Work, energy and power’ topic for the first year of the AQA A-Level Physics course. Covers: The force mainly responsible for energy dissipation The energy store where wasted energy in mainly transferred to Whether a device can be 100% efficient Fully resourced and with practice exam questions (with worked answers).

Fifth lesson of the ‘Matter and radiation’ topic for the first year of the AQA A-Level Physics course. Covers different types of particle interactions, Feynman diagrams and exchange particles. Fully resourced and with practice exam questions (with worked answers).

Second lesson of the ‘Newton’s laws of motion’ topic for the first year of the AQA A-Level Physics course. Covers: When to apply F=ma How support force changes in a lift When F=ma cannot be applied Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘Force and momentum’ topic for the first year of the AQA A-Level Physics course. Covers: If momentum is lost in a collision Definition of momentum Conditions needed for momentum to be conserved Fully resourced and with practice exam questions (with worked answers).