Term 1 Week 5 Circular Motion & Lab Investigation

   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

Lab Investigation

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

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! ; )

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

Term 1 Week 3 Forces, Newton's Laws of Motion Free Body Force Diagrams

  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

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

Term 1 Week 2 2026 Kinematics and Projectile Motion

 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

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

Term 1 Week 1 Units, Vectors, Graphs of Motion

  Homework

Kinematics

• Act 8B Graphs of motion p.101

Vectors

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

SI Unit Prefix

Scalar & Vector Quantities - What They Are

Week 9 Term 3 Lens & Curved Mirror

Homework:

Basic Properties of Waves

• Act 5A, p,53, Pulses and Waves
• Ex 3D, p.66--67, Wave Properties

Superposition & Diffraction

• 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
• Ex 3E, p.69-70, Diffration
• Ex 3H, p.81-83 Waves on a String
• Ex 3I, p.85-87 Wave Refraction on a String

Young’s Double Slit Experiment

• Ex 3B, p. 47-52, Refraction
• Ex 3G, p.76-78 Two Point Source Interference

Reflection, Refraction and Diffraction

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

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

Week 8 Term 3 Two Point Source Interference

  Homework:

Basic Properties of Waves

• Act 5A, p,53, Pulses and Waves
• Ex 3D, p.66--67, Wave Properties

Superposition & Diffraction

• 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
• Ex 3E, p.69-70, Diffration
• Ex 3H, p.81-83 Waves on a String
• Ex 3I, p.85-87 Wave Refraction on a String

Young’s Double Slit Experiment

• Ex 3B, p. 47-52, Refraction
• Ex 3G, p.76-78 Two Point Source Interference

Reflection, Refraction and Diffraction

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

Diffraction

Diffraction of Water Waves in a Ripple Tank

Two Point Source Interference

Two Point Source Interference

Double Slit Experiment

PhET Sound Wave Interference - link

PhET Wave Interference - link HTML

Snell's Law & Critical Angle

The Critical Angle occurs when a wave is attempting to pass from a medium with a slower speed to that of a higher speed 

low v → higher v

low 𝜆 → higher 𝜆

high n → lower n

The Critical angle is the incident angle where the refracted angle equals 90 degrees

Refraction Bending Light PhET Application

Snell's Law

• Any incident above the Critical angle will prevent any refraction occuring and Total Internal Reflection will occur
• The Critical angle is can be found by sin(𝜭c) = n2/n1

FibreOptic Cables: How they work?

Total Internal Reflection T.I.R.

What Happens to Lazers Underwater?