Homework
- Act 8B Graphs of motion p.101 (last week)
- Act 8C Kinematics p.102 (last week)
- Ex 4E Kinematics p.115-117 (last week)
- Act 9A Vectors p.108-109 (last week)
- Ex 4A Vectors p.90-94 (last week)
- Act 12B Projectiles p.140-144 (last week)
- Ex 4F Projectiles p.119-124 (last week)
- Act 10A p.117-118 Forces (last week)
- Act 10B p.123-124 Forces (last week)
- Ex 4B p.97-104 Forces (last week)
- Ex 4G p.125-130 Torque (last week)
- Act 13A p.148-149 Circular Motion (last week)
- Ex 4H p.132-134 Circular Motion (last week)
- Ex 2B, p.16-18, Graphing
- Ex 2C, p.19-25, Identifying Relationships and Experimental Equations
- Act 14A, Energy and Springs
- Act 14B, 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
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
