Week 10 Term 1 2025 Circular Motion

Homework

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

Vectors

• Act 9A Vectors p.108-109
• Ex 4A Vectors p.90-94

Forces

• Act 10A Forces p.117-118
• Act 10B Forces p.123-124
• Ex 4B Forces p.97-104

Graphing Exercises (do these on the spreadsheet)

• Ex 2B, p.16-18 Level 2 Graphing
• Ex 2C, p.19-25 Level 2 Identifying Relationships and Experimental Equations
• Ex 2B, p.23-40 Level 3 Handout booklet on Graphing Errors

Energy

• Act 14B, p. 158-160 Combined Mechanics
• Ex 4J, p. 143-147 Energy, Work, Power

Circular Motiuon

• Act 13A p.148-149 Circular Motion
• Ex 4H p.132-134 Circular Motion

Circular Motion

• Velocity is always at a tangent to the circle. Even if the speed remains constant, the velocity is changing because it is accelerating.

vc = 2𝝿r/T

• Centrapetal Acceleration is always toward the centre of the circle.
• ac = mv2/r
• Centapetal Force is the Net Force, and is also always towards the centre of the circle.

Fc = mv2/r

Uniform Circular Motion

Circular Motion

PHet Application on Circular Motion

Derivation of Centripetal Acceleration

Centrapetal vs Centrafugal

Faking Gravity

Can We Create Artificial Gravity?

What is the Coriolis Effect?

The Most Mind-Blowing Aspect of Circular Motion (but don't use this to answer a NCEA Exam! ; )

Week 7 Term 1 2025 Energy

 Homework

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

Vectors

• Act 9A Vectors p.108-109
• Ex 4A Vectors p.90-94

Forces

• Act 10A Forces p.117-118
• Act 10B Forces p.123-124
• Ex 4B Forces p.97-104

Graphing Exercises (do these on the spreadsheet)

• Ex 2B, p.16-18 Level 2 Graphing
• Ex 2C, p.19-25 Level 2 Identifying Relationships and Experimental Equations
• Ex 2B, p.23-40 Level 3 Handout booklet on Graphing Errors

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

Week 6 Term 1 2025 Graphing Exercises for the Lab Assessment

 Homework

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

Vectors

• Act 9A Vectors p.108-109
• Ex 4A Vectors p.90-94

Forces

• Act 10A Forces p.117-118
• Act 10B Forces p.123-124
• Ex 4B Forces p.97-104

Graphing Exercises (do these on the spreadsheet)

• Ex 2B, p.16-18 Level 2 Graphing
• Ex 2C, p.19-25 Level 2 Identifying Relationships and Experimental Equations
• Ex 2B, p.23-40 Level 3 Handout booklet on Graphing Errors

Revision for Lab assessment

Errors & Processing - Link (scroll to bottom of page)

What's the difference between accuracy 

and precision? 

(Systematic Error & Ramdom Error)

L2 Relationships Videos (click here)

L3 Errors Videos (click here)

Linerising Graphs in Physics

Linerisation of Data

Uncertainties and Errors

World's Heaviest Weight - the importance of error reduction through measurement

Week 5 Term 1 2025 Vectors and Forces

 Homework

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

Vectors

• Act 9A Vectors p.108-109
• Ex 4A Vectors p.90-94

Forces

• Act 10A Forces p.117-118
• Act 10B Forces p.123-124
• Ex 4B Forces p.97-104

Force

Mass on a Slope

Drawing a Free Body Diagram

Net Force - PhET Application - link here

What is a Force?

What Forces are Acting on You?

Newton's 3 Laws, with a bicycle

Best Film on Newton's Third Law Ever

Newton's third law - Best Demonstration EVER !!

Newton’s Third Law of Motion Demonstrated in Space

What is Gravity

The Difference Between Mass & Weight

Misconception About Falling Objects

Week 4 Term 1 2025 Vectors

 Homework

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

Vectors

• Act 9A Vectors p.108-109
• Ex 4A Vectors p.90-94

Vectors

A vector has a magnitude (size) and direction

Vector Addition

• Always add Head to Tail
• It does not matter which order you add vectors

Adding & Subtracting Vectors

What is a Vector?

Scalars, Vectors, and Vector Operations

Compass Rose and Bearings

Week 2 Term 1 2025 Kinematics & Projectile Motion

 Homework

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

Kinematics Slide Presentation - How to choose and use the correct Kinematic

Kinematic Equations

Only used when an object is accelerating

vf = vi + at	← missing d
vf2 = vi2 + 2ad	← missing t
d = vit + ½at2	← missing vf
d = (vi + vf)t/2	← missing a

Choose the kinematic equation based on:

• what quantities you are given
• what quantity is asked for
• what quantity is not involved

Acceleration and Kinematic Equations

Introduction to the Kinematic Equations

Projectile Motion

See Projectile Motion Videos at the bottom of the Mechanics Webpage - link here

PhET - Projectile Motion  - link here

Projectile Motion - Khan Academy

Horizontal & Vertical Vectors in Projectile Motion

Introduction to Projectile Motion

Week 7 Term 3 2024

 Homework:

Basic Wave Properties

• Act 5A, p,53, Pulses and Waves

• Ex 3D, p.66--67, Wave Properties

• Ex 3F, p.3F, p.73-75 Superposition

• Act 5B, p. 58, Reflection, Refraction and Diffraction of Waves

• Act 5C, p.63-64, Diffraction and Superposition

Young’s Double Slit Experiment

• Ex 3B, p. 47-52, Refraction

• Ex 3E, p.69-70, Diffration

• Ex 3G, p.76-78 Two Point Source Interference

• Ex 3H, p.81-83 Waves on a String

• Ex 3I, p.85-87 Wave Refraction on a String

Lens and Curved Mirror

• Ex 3I, p.85-87 Wave Refraction on a String

• Ex 3B, p. 47-52, Refraction

• Ex 3C, p.56-63, Lens

• Ex 3A, p.37-44 Curved Mirror

Lens/Mirror Simbucket - app link

Plane & Curved Mirrors

Lenses

Ray Diagram

Comparing Lens & Mirror

Using Descartes formula for the Lens & Mirror