Term 1 Week 7 2018

Homework:

• Ex 4B Forces, p. 94-104
• Ex 4H Circular Motion, p. 132-134
• Ex 4E Kinematics, p. 115-117 (Revision)
• Ex 4D Momentum (Collisions) p. 109-112
• Ex 4C Impulse (Change in Momentum) p. 105-107

Momentum

In the absence of external forces the total momentum is always conserved

PhET Momentum Collisions Lab - Link

Conservation of Momentum

Stacked Ball Drop

Term 1 Week 6 2018

Homework:

• Ex 4B Forces, p. 94-104
• Ex 4H Circular Motion, p. 132-134

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

https://phet.colorado.edu/en/simulation/legacy/rotation - link

Derivation of Centripetal Acceleration

Centrapetal vs Centrafugal

Faking Gravity

What is the Coriolis Effect?

Term 1 Week 5 2018

Homework:

• Ex 4A Vectors p.90-94
• Ex 4B Forces, p. 94-104

Forces

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?

Best Film on Newton's Third Law Ever

What is Gravity

The Difference Between Mass & Weight

Misconception About Falling Objects

Term 1 Week 4 2018

Homework:
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

Vectors Physics, Basic Introduction, Head to Tail Graphical Method of Vector Addition & Subtraction

Term 1 Week 3 2018

Projectile Motion

Homework:
Projectile Motion worksheet

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 4 Week 2 2017

Revision for the External Exams

Electricity Learn Coach Videos

NCEA Physics L2 Electricity: V I and R - Part1

NCEA Physics L2 Electricity: V I and R - Part2

NCEA Physics L2 Electricity: Power

NCEA Physics L2 Electricity: Electric Fields - Part 1

NCEA Physics L2 Electricity: Electric Fields - Part 2

NCEA Physics L2 Electricity: Right Hand Slap Rule - Part 1

NCEA Physics L2 Electricity: Right Hand Slap Rule - Part 2

NCEA Physics L2 Electricity: Right Hand Slap Rule - Part 3

Term 4 Week 1 2017

Revision for the External Exams

Waves Learn Coach Videos

NCEA Physics L2 Waves: Diffraction

NCEA Physics L2 Waves: Superposition

NCEA Physics L2 Waves: Interference

NCEA Physics L2 Waves: Wave Refraction - Part 1

NCEA Physics L2 Waves: Wave Refraction - Part 2

NCEA Physics L2 Waves: Ray Refraction - Part 1

NCEA Physics L2 Waves: Ray Refraction - Part 2

NCEA Physics L2 Waves: Introduction to Ray Diagrams

NCEA Physics L2 Waves: Convex Lens Diagrams

NCEA Physics L2 Waves: Concave Lens Diagrams

NCEA Physics L2 Waves: Convex Mirror Diagrams

NCEA Physics L2 Waves: Concave Mirror Diagrams