# Khan Academy

The Khan Academy video links below are organized by chapter and cover some, but not necessarily all the topics you will be responsible for. They have been provided as an addition resources. Many are captioned for the hearing impaired.

## Suggested Unit One Videos:

### Chapter 0 (Math Review)

- Introduction to Order of Operations (Your calculator follows these rules, so its important to understand them.)
- More Complicated Order of Operations
- Understanding Exponents
- Understanding Exponents 2
- Scientific Notation
- Scientific Notation Examples
- Direct Inverse and Joint Variation
- Proportionality Constant for Direct Variation
- Solving for a Variable
- The Pythagorean Theorem

### Chapter 1 (Models, Measurement and Vectors)

- Unit conversion
- Speed translation (unit conversion examples)
- Unit Conversion Example: Drug Dosage
- Significant Figures
- More on Significant Figures
- Multiplying and Dividing with Significant Figures
- Addition and Subtraction with Significant Figures
- Pure Numbers and Significant Digits
- Introduction to Vectors and Scalars
- Visualizing Vectors in 2 Dimensions

### Chapter 2 (Motion Along a Straight Line)

- Calculating Average Velocity or Speed
- Solving for Time
- Displacement from Time and Velocity Example
- Acceleration
- Airbus A380 Take-off Time
- Airbus A380 Take-off Distance
- Why Distance is Area under Velocity-Time Line
- Average Velocity for Constant Acceleration
- Acceleration of Aircraft Carrier Takeoff
- Deriving Displacement as a Function of Time, Acceleration and Initial Velocity (explanation of the force part will come in later chapter)
- Plotting Projectile Displacement, Acceleration, and Velocity
- Projectile Height Given Time
- Deriving Max Projectile Displacement Given Time

### Chapter 3 (Motion in a Plane)

- Projectile at an Angle
- Different Way to Determine Time in Air
- Launching and Landing on Different Elevations
- Total Displacement for Projectile
- Total Final Velocity for Projectile
- Correction to Total Final Velocity for Projectile
- Projectile on an Incline
- Unit Vectors and Engineering Notation
- Clearing the Green Monster at Fenway
- Green Monster at Fenway Part 2
- Optimal angle for a projectile part 1
- Optimal angle for a projectile part 2 – Hangtime
- Optimal angle for a projectile part 3 – Horizontal distance as a function of angle (and speed)
- Introduction to centripetal acceleration (part 1)
- Visual Proof: a= v^2/r

### Chapter 4 (Newton’s Laws of Motion)

- Newton’s First Law of Motion
- Newton’s Second Law of Motion
- Newton’s Third Law of Motion
- Mass and Weight Clarification
- Centripetal Acceleration (part 3-vertical example)
- Free Body Diagrams (not a Khan Academy video, but it has some insightful tips)

## Suggested Unit Two Videos:

### Chapter 5 (Applications of Newton’s Laws)

- Ice Accelerating Down an Incline
- Force of Friction Keeping the Block Stationary
- Correction to Force of Friction Keeping the Block Stationary
- Force of Friction Keeping Velocity Constant
- Intuition on Static and Kinetic Friction Comparisons
- Static and Kinetic Friction Example
- Introduction to Tension
- Tension (part 2)
- Tension in an accelerating system and pie in the face
- Moving pulley problem (part 1)
- Moving pulley problem (part 2)
- Intro to springs and Hooke’s Law

### Chapter 6 (Circular Motion and Gravitation)

- Introduction to Gravity
- Introduction to Newton’s Law of Gravitation
- Gravitation (part 2)
- Gravity for Astronauts in Orbit
- Would a Brick or Feather Fall Faster

### Chapter 7 (Work and Energy)

- Introduction to work and energy
- Work and Energy (part 2)
- Conservation of Energy
- Work/Energy problem with Friction

### Chapter 8 (Momentum)

- Introduction to Momentum
- Momentum: Ice skater throws a ball
- 2-dimensional momentum problem
- 2-dimensional momentum problem (part 2)
- Center of Mass

## Suggested Unit Three Videos:

### Chapter 9 (Rotational Motion)

### Chapter 10 (Dynamics of Rotational Motion)

- Introduction to Torque
- Moments (he gets clockwise mixed up with counterclockwise)
- Moments (part 2)
- Conservation of angular momemtum

### Chapter 11 (Elasticity and Periodic Motion)

- Potential energy stored in a spring
- Spring potential energy example (mistake in math)
- Introduction to Harmonic Motion
- Harmonic Motion Part 3 (no calculus)

### Chapter 12 (Mechanical Waves and Sound)

- Introduction to Waves
- Amplitude, Period, Frequency and Wavelength of Periodic Waves
- Introduction to the Doppler Effect
- Doppler effect formula for observed frequency
- Doppler effect formula when source is moving away
- When the source and the wave move at the same velocity

## Suggested Unit Four Videos:

### Chapter 13 (Fluid Mechanics)

- Fluids (part 3) (Pressure)
- Fluids (part 4) (Pressure)
- Fluids (part 5) (Archimedes Principle)
- Fluids (part 6) (Archimedes Principle)
- Fluids (part 7) (Moving fluides)
- Fluids (part 8) (Proof of Bernoulli’s Equation)
- Fluids (part 9) (Proof of Bernoulli’s Equation part 2)
- Fluids (part 12) (Example of Bernoulli’s Principle)

### Chapter 14 (Temperature and Heat)

- Calorimetry and Thermal Equilibrium 1 (not a Khan Acacademy video)
- Calorimetry Example 1
- Calorimetry Example 1 Continued

### Chapter 15 (Thermal Properties of Matter)

- Thermodynamics (part 1) (Gas pressure and volume at constant temperature)
- Thermodynamics (part 2) (Introduction to temperature)
- Thermodynamics (part 3) (Ideal Gas Law)
- Thermodynamics (part 4) (Concept of a mole and universal gas constant)
- Thermodynamics (part 5) (Ideal Gas Law example)
- First Law of Thermodynamics/ Internal Energy
- More on Internal Energy

### Chapter 16 (The Second Law of Thermodynamics)

- Work from Expansion
- PV-diagrams and Expansion Work
- Work Done by Isothermic Process
- Carnot Cycle and Carnot Engine
- Thermodynamic Entropy Definition Clarification
- Entropy Intuition
- Maxwell’s Demon
- More on Entropy
- Efficiency of a Carnot Engine
- Carnot Efficiency 2: Reversing the Cycle
- Carnot Efficiency 3: Proving that it is the most efficient

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