Contents
Energy
Energy changes in a system, and in the ways energy is stored before and after such changes
Systems
Energy Store
- Thermal Energy Store
- Elastic Potential Energy Store
- Chemical Potential Energy Store
- Kinetic Energy Store
- Magnetic Potential Energy Store
- Electrostatic Potential Energy Store
- Nuclear Potential Energy Store
- Gravitational Potential Energy Store
- Internal Energy Store
- Vibrational Energy Store
Calculating Energy Stores
- Calculating Kinetic Energy
- Calculating Gravitational Potential Energy
- Calculating Elastic Potential Energy
- Calculating Thermal Energy
Energy Transfers
Power Ratings of Electrical Appliances
Conservation, dissipation and national and global energy sources
Improving Energy Transfers
Energy Resources
Forces
Forces and their Interactions
Representing Forces
Contact Forces
Non-contact Forces
Interactions
Work Done as force x distance, energy transfer
Pressure and pressure differences in fluids
Moments, Levers and gears
Forces and Motion
Speed and velocity, speed as distance over time; acceleration; distance-time and velocity-time graphs
Motion
- Vector
- Scalar
- Displacement
- Distance
- Velocity
- Speed - typical speeds wind, sound, walking, running, cycling and other transportation systems;
- Acceleration - estimate everyday accelerations
- Circular Motion - qualitative
- SUVAT - v2 = u2 + 2as
Graphing Motion
Forces, accelerations and Newton’s laws of motion
- Newton's First Law - apply to stationary, uniform velocity, uniform speed but changing v, changing speed.
- Newton's Second Law
- Inertial Mass - Higher defined as ratio.
- Newton's Third Law
Higher
Safety in public transport
- Reaction Time - how to measure
- Stopping Distance
- Rapid Deceleration