Homework
Vectors
- Act 9A Vectors p.108-109
- Ex 4A Vectors p.90-94
Kinematics
- Act 8B Graphs of motion p.101
- Act 8C Kinematics p.102
- Ex 4E Kinematics p.115-117
Projectile Motion
- Act 12B Projectile Motion p.140-141
- Ex 4F Projectile Motion p.119-124
Forces
- Act 10A Forces p.117-118
- Act 10B Forces p.123-124
- Ex 4B Forces p.97-104
Circular Motion
- Act 13A p.148-149 Circular Motion
- Ex 4H p.132-134 Circular Motion
Energy
- Act 14B, p. 158-160 Combined Mechanics
- Ex 4J, p. 143-147 Energy, Work, Power
Energy
- Energy can never be created
- Energy can never be destroyed
- Energy can only change its form (Work is done)
- Energy has the ability to make something happen, i.e. to do Work
- The unit for energy is the Joule (J)
- J = Kgm2s-2 in fundamental units
Perpetual Motion Machine?
A Simple Proof of Conservation of Energy
Conservation of Energy
Work & Transformation of Energy
Power & Work Done
Kinetic Energy
Gravitaional Potential Energy
Work, Energy, and Power
Work, Energy and Power Review
Gravitational Potential Energy and Kinetic Energy Skate Park PhET Link - HTML
Work
Work is a transformation (change) of energy from one form to another form. Work only occurs when something is done.
- Power is the rate at which energy is transformed
- Power is the rate at which work is done
- Unit of power Watt (W = J/s)
Power vs Energy
Work, Energy & Power
Kinetic Energy & Gravitational Potential Energy
World's Heaviest Weight - the importance of error reduction through measurement
