### Lecture Description

An overview video of what physics is about as we delve deeper in future videos!

Watch the next lesson: www.khanacademy.org/science/physics/one-dimensional-motion/displacement-velocity-time/v/introduction-to-vectors-and-scalars?utm_source=YT&utm_medium=Desc&utm_campaign=physics

### Course Index

- Introduction to physics | One-dimensional motion
- Intro to vectors & scalars | One-dimensional motion
- Calculating average velocity or speed | One-dimensional motion
- Solving for time | One-dimensional motion
- Displacement from time and velocity example | One-dimensional motion
- Acceleration | One-dimensional motion
- More on Newton's first law of motion
- Newton's second law of motion | Forces and Newton's laws of motion
- Newton's third law of motion | Forces and Newton's laws of motion
- Airbus A380 take-off time | One-dimensional motion
- Airbus A380 take-off distance | One-dimensional motion
- Why distance is area under velocity-time line
- Average velocity for constant acceleration | One-dimensional motion
- Acceleration of aircraft carrier take-off | One-dimensional motion
- Race cars with constant speed around curve
- Introduction to gravity | Centripetal force and gravitation
- Mass and weight clarification | Centripetal force and gravitation
- Gravity for astronauts in orbit | Centripetal force and gravitation
- Would a brick or feather fall faster?
- Deriving displacement as a function of time, acceleration, and initial velocity
- Plotting projectile displacement, acceleration, and velocity
- Projectile height given time | One-dimensional motion
- Deriving max projectile displacement given time
- Impact velocity from given height | One-dimensional motion
- Visualizing vectors in 2 dimensions | Two-dimensional motion
- Projectile at an angle | Two-dimensional motion
- Different way to determine time in air | Two-dimensional motion
- Launching and landing on different elevations | Two-dimensional motion
- Total displacement for projectile | Two-dimensional motion
- Total final velocity for projectile | Two-dimensional motion
- Correction to total final velocity for projectile
- Projectile on an incline | Two-dimensional motion
- Unit vectors and engineering notation | Two-dimensional motion
- Optimal angle for a projectile part 1: Components of initial velocity
- Optimal angle for a projectile part 2: Hangtime
- Optimal angle for a projectile part 3: Horizontal distance as a function of angle (and speed)
- Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculus
- Normal force and contact force | Forces and Newton's laws of motion
- Normal force in an elevator | Forces and Newton's laws of motion
- Inclined plane force components | Forces and Newton's laws of motion
- Ice accelerating down an incline | Forces and Newton's laws of motion
- 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 | Forces and Newton's laws of motion
- Introduction to tension | Forces and Newton's laws of motion
- Introduction to tension (part 2) | Forces and Newton's laws of motion
- Tension in an accelerating system and pie in the face
- Introduction to momentum | Impacts and linear momentum
- Momentum: Ice skater throws a ball | Impacts and linear momentum
- 2-dimensional momentum problem | Impacts and linear momentum
- 2-dimensional momentum problem (part 2)
- Introduction to work and energy | Work and energy
- Work and energy (part 2) | Work and energy
- Conservation of energy | Work and energy
- Work/energy problem with friction | Work and energy
- Introduction to mechanical advantage | Work and energy
- Mechanical advantage (part 2) | Work and energy
- Mechanical advantage (part 3) | Work and energy
- Center of mass | Impacts and linear momentum
- Introduction to torque | Moments, torque, and angular momentum
- Moments | Moments, torque, and angular momentum
- Moments (part 2) | Moments, torque, and angular momentum
- Unit vector notation | Two-dimensional motion
- Unit vector notation (part 2) | Two-dimensional motion
- Projectile motion with ordered set notation
- Centripetal force and acceleration intuition
- Visual understanding of centripetal acceleration formula
- Relationship between angular velocity and speed
- Calculus proof of centripetal acceleration formula
- Loop de loop question | Centripetal force and gravitation
- Loop de loop answer part 1 | Centripetal force and gravitation
- Loop de loop answer part 2 | Centripetal force and gravitation
- Acceleration due to gravity at the space station
- Space station speed in orbit | Centripetal force and gravitation
- Conservation of angular momemtum
- Introduction to Newton's law of gravitation
- Gravitation (part 2) | Centripetal force and gravitation
- Intro to springs and Hooke's law | Work and energy
- Potential energy stored in a spring | Work and energy
- Spring potential energy example (mistake in math)
- Introduction to harmonic motion | Oscillatory motion
- Harmonic motion part 2 (calculus) | Oscillatory motion
- Harmonic motion part 3 (no calculus) | Oscillatory motion
- Pressure and Pascal's principle (part 1) | Fluids
- Pressure and Pascal's principle (part 2) | Fluids
- Pressure at a depth in a fluid | Fluids
- Finding height of fluid in a barometer | Fluids
- Archimedes principle and buoyant force | Fluids
- Buoyant force example problems | Fluids
- Volume flow rate and equation of continuity | Fluids
- Bernoulli's equation (part 1) | Fluids
- Bernoulli's equation (part 2) | Fluids
- Bernoulli's equation (part 3) | Fluids
- Bernoulli's equation (part 4) | Fluids
- Bernoulli's example problem | Fluids
- Thermodynamics part 1: Molecular theory of gases
- Thermodynamics part 2: Ideal gas law | Thermodynamics
- Thermodynamics part 3: Kelvin scale and Ideal gas law example
- Thermodynamics part 4: Moles and the ideal gas law
- Thermodynamics part 5: Molar ideal gas law problem
- Electrostatics (part 1): Introduction to Charge and Coulomb's Law
- Electric field | Electric charge, electric force, and voltage
- Proof: Field from infinite plate (part 1) | Electrostatics | Electrical engineering
- Proof: Field from infinite plate (part 2) | Electrostatics | Electrical engineering
- Electric potential energy | Electrostatics | Electrical engineering
- Electric potential energy (part 2-- involves calculus)
- Voltage | Electric charge, electric force, and voltage
- Capacitance | Circuits
- Introduction to circuits and Ohm's law | Circuits
- Resistors in series | Circuits
- Resistors in parallel | Circuits
- Example: Analyzing a more complex resistor circuit
- Cross product 1 | Magnetic forces, magnetic fields, and Faraday's law
- Cross product 2 | Magnetic forces, magnetic fields, and Faraday's law
- Cross product and torque | Moments, torque, and angular momentum
- Introduction to magnetism
- Magnetic force on a charge
- Magnetic force on a proton example (part 1)
- Magnetic force on a proton example (part 2)
- Magnetic force on a current carrying wire
- Magnetic field created by a current carrying wire
- Magnetic force between two currents going in the same direction
- Magnetic force between two currents going in opposite directions
- Electric motors (part 1)
- Electric motors (part 2)
- Electric motors (part 3)
- Induced current in a wire
- The dot product | Magnetic forces, magnetic fields, and Faraday's law
- Dot vs. cross product
- Calculating dot and cross products with unit vector notation
- Introduction to waves | Mechanical waves and sound
- Amplitude, period, frequency and wavelength of periodic waves
- Introduction to the doppler effect | Mechanical waves and sound
- 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
- Mach numbers | Mechanical waves and sound
- Specular and diffuse reflection | Geometric optics
- Specular and diffuse reflection 2 | Geometric optics
- Refraction and Snell's law | Geometric optics
- Refraction in water | Geometric optics
- Snell's law example 1 | Geometric optics
- Snell's law example 2 | Geometric optics
- Total internal reflection | Geometric optics
- Virtual image | Geometric optics
- Parabolic mirrors and real images | Geometric optics
- Parabolic mirrors 2 | Geometric optics
- Convex parabolic mirrors | Geometric optics
- Convex lenses | Geometric optics
- Convex lens examples | Geometric optics
- Concave lenses | Geometric optics
- Object image and focal distance relationship (proof of formula)
- Object image height and distance relationship | Geometric optics
- Viewing g as the value of Earth's gravitational field near the surface

### Course Description

A collection of physics tutorials prepared by Khan Academy's Sal Khan.

Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

Topics include: Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.