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### Introduction to Motion Part 1

00:09:09Salman KhanIntroduction to basic physics of motion. Introduces the concept of variable velocity/acceleration.

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### Introduction to Motion Part 2

00:09:37Salman KhanMore on how velocity, distance, acceleration and time relate to each other.

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### Introduction to Motion Part 3

00:04:30Salman KhanUsing the basic equations of distance and velocity to solve motion problems.

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### Projectile Motion Part 1

00:09:07Salman KhanUsing the equations of motion to figure out things about falling objects.

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### Projectile Motion Part 3

00:09:04Salman KhanAn example of solving for the final velocity when you know the change in distance, time, initial velocity, and acceleration.

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### Projectile Motion Part 4

00:08:57Salman KhanSolving for time when you are given the change in distance, acceleration, and initial velocity.

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### 2-Dimensional Projectile Motion Part 1

00:09:18Salman KhanUsing vectors to solve 2 dimensional projectile motion problems.

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### 2-Dimensional Projectile Motion Part 3

00:09:13Salman KhanCompleting our first example from parts 1 and 2.

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### 2-Dimensional Projectile Motion Part 4

00:09:04Salman KhanAnother example of a 2-dimensional projectile motion problem.

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### 2-Dimensional Projectile Motion Part 5

00:04:05Salman KhanThe second part of the last projectile motion problem.

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### Optimal Angle for Projectile Part 2

00:04:12Salman KhanOptimal angle for a projectile part 2 - Hangtime.

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### Optimal Angle for Projectile Part 3

00:02:39Salman KhanHorizontal distance as a function of angle (and speed).

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### Newton's First Law of Motion

00:09:26Salman KhanIntroduction to newton's first law of motion. Inertial frames of reference.

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### Introduction to Tension

00:10:19Salman KhanAn introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them.

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### Tension in an Accelerating System

00:09:28Salman KhanThe second part to the complicated problem. We figure out the tension in the wire connecting the two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a man's face.

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### Momentum: Ice Skater Throws a Ball

00:06:00Salman KhanA simple conservation of momentum problem involving an ice skater and a ball.

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### 2-Dimensional Momentum Problem Part 1

00:10:35Salman KhanAn example of conservation of momentum in two dimensions.

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### 2-Dimensional Momentum Problem Part 2

00:09:32Salman KhanWe finish the 2-dimensional momentum problem.

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### Introduction to Work and Energy Part 2

00:09:51Salman KhanMore on work. Introduction to Kinetic and Potential Energies.

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### Conservation of Energy

00:10:06Salman KhanUsing the law of conservation of energy to see how potential energy is converted into kinetic energy.

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### Work/Energy Problem with Friction

00:10:05Salman KhanA conservation of energy problem where all of the energy is not conserved.

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### Mechanical Advantage Part 1

00:10:02Salman KhanIntroduction to simple machines, mechanical advantage and moments.

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### Unit Vector Notation Part 1

00:09:54Salman KhanExpressing a vector as the scaled sum of unit vectors.

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### Unit Vector Notation Part 2

00:09:13Salman KhanMore on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method.

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### Projectile Motion with Ordered Set Notation

00:10:17Salman KhanSolving the second part to the projectile motion problem (with wind gust) using ordered set vector notation.

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### Centripetal Acceleration Part 1

00:10:08Salman KhanIntuition behind what it takes to make something travel in a circle.

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### Centripetal Acceleration Part 2

00:10:10Salman KhanMore intuition on centripetal acceleration. A simple orbit problem.

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### Centripetal Acceleration Part 3

00:07:40Salman KhanHow fast does a car need to go to complete a loop-d-loop.

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### Calculus Proof that a=v^2/r

00:10:14Salman KhanUsing calculus and vectors to show that centripetal acceleration = v^2/r.

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### Introduction to Angular Velocity

00:08:10Salman KhanAngular velocity or how fast something is spinning.

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### Conservation of Angular Momentum

00:10:12Salman KhanAngular momentum is constant when there is no net torque.

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### Potential Energy Stored in a Spring

00:10:00Salman KhanWork needed to compress a spring is the same thing as the potential energy stored in the compressed spring.

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### Spring Potential Energy Example (Mistake in Math)

00:09:38Salman KhanA spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!).

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### Harmonic Motion Part 1

00:10:03Salman KhanIntuition behind the motion of a mass on a spring (some calculus near the end).

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