Fourth lesson of the ‘Materials’ topic for the first year of the AQA A-Level Physics course. Covers: Stretching a metal wire (spring) below the elastic limit Stretching a metal wire (spring) beyond the elastic limit Deformation of different materials Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘Materials’ topic for the first year of the AQA A-Level Physics course. Covers: Stress and strain What is Young modulus Key features of stress-strain graphs Fully resourced and with practice exam questions (with worked answers).

Second lesson of the ‘Materials’ topic for the first year of the AQA A-Level Physics course. Covers: Force-extension graphs The spring constant Energy stored in a spring Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘Materials’ topic for the first year of the AQA A-Level Physics course. Covers: Definition of density Calculating density and stating the unit Measuring density of objects 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).

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).

Second lesson of the ‘Work, energy and power’ topic for the first year of the AQA A-Level Physics course. Covers: What happens when work is done on an object Energy changes that take place when an object falls Effect on kinetic energy when speed changes Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘Work, energy and power’ topic for the first year of the AQA A-Level Physics course. Covers: Definition of energy Whether energy ever disappears Definition of work Fully resourced and with practice exam questions (with worked answers).

Fifth lesson of the ‘Force and momentum’ topic for the first year of the AQA A-Level Physics course. Covers: Energy changes in explosions Total momentum in an explosion Momentum of two bodies after an explosion Fully resourced and with practice exam questions (with worked answers).

Fourth lesson of the ‘Force and momentum’ topic for the first year of the AQA A-Level Physics course. Covers: How to distinguish between elastic and inelastic collisions What is meant by an elastic collision Whether any collision can ever be perfectly elastic 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).

Second lesson of the ‘Force and momentum’ topic for the first year of the AQA A-Level Physics course. Covers: Impact forces and impact time Calculating momentum changes Momentum of a ball hitting a wall Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘Force and momentum’ topic for the first year of the AQA A-Level Physics course. Covers: Calculating momentum Link between Newton’s 1st and 2nd law and momentum Define impulse of a force and how to use a force-time graph Fully resourced and with practice exam questions (with worked answers).