Want to learn physics? Welcome to our free online physics course!

Here's how to start:

Download and read these free notes on physics.
Watch and study the physics videos listed below, in the order that they appear.
Work the problems linked to at the end of each section.

If you do this, you'll get the equivalent of a two-term college-level physics course. Good luck! We hope you learn something!

Mechanics

Introduction

Lesson 1: The power of basic physics mechanics: predicting motion of an object (watch it)
Lesson 2: Variables used to describe the motion of an object (watch it)
Lesson 3: Three important equations used to study motion of an object (watch it)

One dimensional motion

Lesson 4: Thinking about velocity and acceleration (watch it)
Lesson 5: Getting the signs right with one dimensional motion (watch it)
Lesson 6: Hints for solving problems with multiple accelerations (watch it)
Lesson 7: An introduction to vectors (watch it)
Lesson 8: Correctly reporting answers with vectors (Part I) (watch it)
Lesson 9: Correctly reporting answers with vectors (Part II) (watch it)
Section test: Work these problems.

Two dimensional motion

Lesson 10: Two dimensional or projectile motion (watch it)
Lesson 11: Transitioning yourself from one to two dimensional motion (watch it)
Lesson 12: Hang time or the time a projectile spends in the air (watch it)
Section test: Work these problems.

Newton's Laws

Introduction

Lesson 13: What the goal of Newton's second law F=ma is (watch it)
Lesson 14: Why F=ma is not very useful (watch it)

Types of Forces

Lesson 15: Types of forces you'll encounter in a physics class (watch it)
Lesson 16: What weight is (watch it)
Lesson 17: What tension is (watch it)
Lesson 18: How the spring force works (watch it)
Lesson 19: Why objects slide down sloped surfaces (watch it)
Lesson 20: What the normal force is (watch it)
Lesson 21: Where friction comes from (watch it)
Lesson 22: Where the centripetal force comes from for objects moving in circles (watch it)

Hints when using forces

Lesson 23: Using the force of tension in solving physics problems (watch it)
Lesson 24: Facts about tension as it deals with ropes (Part 1 of 2) (watch it)
Lesson 25: A fact about tension as it deals with ropes (Part 2 of 2) (watch it)
Lesson 26: How to correctly find the normal force (watch it)

Problems involving forces

Lesson 27: Solving the problem of 3 blocks tied together by ropes (watch it)
Lesson 28: Solving the problem of a block on a table with two blocks hanging over the sides (watch it)
Lesson 29: Solving the problem of a mass on an inline connected to a hanging mass with a rope (watch it)
Lesson 30: Solving the problem of two blocks connected by a rope one on a table with friction and the other hanging over the edge (watch it)
Lesson 31: Solving the problem of two blocks connected by a rope one on a frictionless table and the other hanging over the edge (watch it)
Lesson 32: Solving the problem of two blocks connected by a rope one on an incline and the other hanging over the edge (watch it)
Lesson 33: Solving the problem of two blocks connected by a rope one on an rough incline (with friction) and the other hanging over the edge (watch it)
Lesson 34: Solving the problem of a single block on an inclined surface (watch it)
Lesson 35: Solving the Atwood Machine problem (watch it)
Section test: Work these problems

Energy

Introduction

Lesson 36: An introduction to what energy is (watch it)
Lesson 37: What "conservation of energy" means (watch it)
Lesson 38: What "conservation of energy" means in a basic physics class (watch it)
Lesson 39: Types of potential energy used in a physics class (watch it)

Formulation

Lesson 40: Equations that deal with the conservation of energy (watch it)
Lesson 41: Potential energy equation of a pendulum (watch it)

Work

Lesson 42: What "work" means in a physics class (Part 1 of 2) (watch it)
Lesson 43: More on what "works" means in a physics class (Part 2 of 2) (watch it)
Lesson 44: Work due to friction (watch it)
Section test: Work these problems

Momentum

Lesson 45: Introduction to momentum and that it's conserved (watch it)
Section test: Work these problems

Rotational Motion

Lesson 46: Introduction to rotational motion (watch it)
Lesson 47: Units used in rotational motion (degrees radians rpms etc.) (watch it)

Statics

Lesson 48: Introduction to Statics (watch it)

Electricity and Magnetism

The Electric Field

Lesson 49: Insulators and conductors (watch it)
Lesson 50: Coulomb's Law (part 1) (watch it)
Lesson 51: Coulomb's Law (part 2) (watch it)
Lesson 52: Introduction to the electric field (watch it)
Lesson 53: Electric field superposition: the electric dipole (Part 1) (watch it)
Lesson 54: Electric field superposition: the electric dipole (Part 2) (watch it)
Lesson 55: Electric field superposition: charges on a square (watch it)
Lesson 56: Charging by contact and induction (the hanging metal ball) (watch it)
Lesson 57: An introduction to charges and the stucture of matter (watch it)
Lesson 58: Now insulators and conductors are affected by an electric field (watch it)
Lesson 59: Dielectrics (watch it)
Lesson 60: Electric field for continuous objects (charged rod) (watch it)
Lesson 61: The electric field due to a line of charge (watch it)
Lesson 62: The electric field produced by charged objects (line ring disk plane and plane-pair of charge) (watch it)
Lesson 63: Electric field and the parallel plate capacitor (watch it)
Lesson 64: Introduction to Gauss's Law (watch it)
Lesson 65: Gauss's Law (the right hand side) (watch it)
Lesson 66: Gauss's Law (the left hand side) (watch it)
Lesson 67: Gauss's Law for constant and non-constant charge densities (watch it)
Section test: Work these problems

Vectors

Lesson 68: What the r-hat vector means (watch it)
Lesson 69: More on the r-hat vector (watch it)
Lesson 70: How the vector cross product works (watch it)

The Electric Potential

Lesson 71: Electric Potential (Part 1) (watch it)
Lesson 72: Electric Potential (Part 2) (watch it)
Lesson 73: Electric Potential (Part 3) (watch it)
Lesson 74: Electric Potential due to a point charge (watch it)
Lesson 75: Electric Potential and Electric Potential Energy (watch it)
Lesson 76: Conservation of energy for charged particle moving in an electric field (watch it)
Section test: Work these problems

DC Circuits

Lesson 77: The origin of an electric current (watch it)
Lesson 78: Introduction to direct current (DC) circuits (watch it)
Lesson 79: Volts current and resistance (watch it)
Lesson 80: Ohm's Law (watch it)
Lesson 81: DC circuits: the junction and loop rules (watch it)
Lesson 82: Introduction to capacitors (watch it)
Lesson 83: Capacitors in series and parallel (watch it)
Lesson 84: Comparing capacitors and inductors in DC circuits (watch it)
Lesson 85: Inductance and inductors (watch it)
Lesson 86: Resistor-Capacitor (RC) circuits (watch it)
Section test: Work these problems

Magnetism and the Magnetic Field

Lesson 87: An introduction to the magnetic field (or B-field) (watch it)
Lesson 88: The Biot and Savart Law for a single moving charge (watch it)
Lesson 89: Using the Biot-Savart Law to find the B-field due to an infinite current carrying wire (watch it)
Lesson 90: The B-field due to a loop of current and a solenoid (watch it)
Lesson 91: A few case studies in the superposition of a B-field involving loops and wires carrying current (watch it)
Lesson 92: Magnetism and matter (watch it)
Section test: Work these problems

Magnetic Forces

Lesson 93: The force law for charges moving in magnetic fields (watch it)
Lesson 94: Forces caused by magnetic fields on wires that carry current (watch it)
Lesson 95: The Electric Motor (watch it)
Section test: Work these problems

Electromagnetic Induction

Lesson 96: Lenz's Law (Part 1) (watch it)
Lesson 97: Lenz's Law (Part 2) (watch it)
Lesson 98: Lenz's Law (Part 3) (watch it)
Lesson 99: Faraday's Law (watch it)
Lesson 100: Motional EMF or the Electromotive Force (watch it)
Lesson 101: Faraday's Law and electric generators (watch it)
Section test: Work these problems

AC Circuits

Lesson 102: Inductor-Capacitor (LC) circuits (watch it)