Term 1 Week 9

Homework:

• Momentum (Conservation of Momentum) Ex 4D, p.109-112
• Impulse Ex 4C, p.105-107

What is Momentum?

Impulse

Relationships

AS 91168, Phy 2.1 Non-Linear Investigation Assessment is taking place for the rest of this week and next week.

Term 1 Week 8

Homework:

Energy Ex 4J, p.143-147

Relationships

• Follow the "Relationships" link above to videos on how to find a Relationship for Phy 2.1, AS 91168, Non-Liner Investigation
• The assessment for Phy 2.1, AS 91168, will be in Week 10 of this Term. It is important that you understand how to answer the Relationships Exercise, Ex 2C, p.19-25.

Term 1 Week 7

Homework:

• Springs Ex 4I, p.137-141

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?

Intro to Springs and Hooke's Law

Potential Energy Stored in a Spring

PhET Simulation on Springs Link

Gravitational Potential Energy and Kinetic Energy Skate Park PhET Link

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

Term 1 Week 6

Homework

• Relationships Ex 2C, p.19-25 this will be checked for weekly notes
• Force Ex 4B, p.97-104 from last week

Relationships