# AP Physics Tutorials with Sal Khan

### 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.

In his first video, Sal Khan addresses an important question to get us started on this fascinating journey: What is physics?
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### Video Lectures & Study Materials

Visit the official course website for more study materials: https://www.khanacademy.org/science/physics

# Lecture Play Lecture
1 Introduction to physics | One-dimensional motion Play Video
2 Intro to vectors & scalars | One-dimensional motion Play Video
3 Calculating average velocity or speed | One-dimensional motion Play Video
4 Solving for time | One-dimensional motion Play Video
5 Displacement from time and velocity example | One-dimensional motion Play Video
6 Acceleration | One-dimensional motion Play Video
7 More on Newton's first law of motion Play Video
8 Newton's second law of motion | Forces and Newton's laws of motion Play Video
9 Newton's third law of motion | Forces and Newton's laws of motion Play Video
10 Airbus A380 take-off time | One-dimensional motion Play Video
11 Airbus A380 take-off distance | One-dimensional motion Play Video
12 Why distance is area under velocity-time line Play Video
13 Average velocity for constant acceleration | One-dimensional motion Play Video
14 Acceleration of aircraft carrier take-off | One-dimensional motion Play Video
15 Race cars with constant speed around curve Play Video
16 Introduction to gravity | Centripetal force and gravitation Play Video
17 Mass and weight clarification | Centripetal force and gravitation Play Video
18 Gravity for astronauts in orbit | Centripetal force and gravitation Play Video
19 Would a brick or feather fall faster? Play Video
20 Deriving displacement as a function of time, acceleration, and initial velocity Play Video
21 Plotting projectile displacement, acceleration, and velocity Play Video
22 Projectile height given time | One-dimensional motion Play Video
23 Deriving max projectile displacement given time Play Video
24 Impact velocity from given height | One-dimensional motion Play Video
25 Visualizing vectors in 2 dimensions | Two-dimensional motion Play Video
26 Projectile at an angle | Two-dimensional motion Play Video
27 Different way to determine time in air | Two-dimensional motion Play Video
28 Launching and landing on different elevations | Two-dimensional motion Play Video
29 Total displacement for projectile | Two-dimensional motion Play Video
30 Total final velocity for projectile | Two-dimensional motion Play Video
31 Correction to total final velocity for projectile Play Video
32 Projectile on an incline | Two-dimensional motion Play Video
33 Unit vectors and engineering notation | Two-dimensional motion Play Video
34 Optimal angle for a projectile part 1: Components of initial velocity Play Video
35 Optimal angle for a projectile part 2: Hangtime Play Video
36 Optimal angle for a projectile part 3: Horizontal distance as a function of angle (and speed) Play Video
37 Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculus Play Video
38 Normal force and contact force | Forces and Newton's laws of motion Play Video
39 Normal force in an elevator | Forces and Newton's laws of motion Play Video
40 Inclined plane force components | Forces and Newton's laws of motion Play Video
41 Ice accelerating down an incline | Forces and Newton's laws of motion Play Video
42 Force of friction keeping the block stationary Play Video
43 Correction to force of friction keeping the block stationary Play Video
44 Force of friction keeping velocity constant Play Video
45 Intuition on static and kinetic friction comparisons Play Video
46 Static and kinetic friction example | Forces and Newton's laws of motion Play Video
47 Introduction to tension | Forces and Newton's laws of motion Play Video
48 Introduction to tension (part 2) | Forces and Newton's laws of motion Play Video
49 Tension in an accelerating system and pie in the face Play Video
50 Introduction to momentum | Impacts and linear momentum Play Video
51 Momentum: Ice skater throws a ball | Impacts and linear momentum Play Video
52 2-dimensional momentum problem | Impacts and linear momentum Play Video
53 2-dimensional momentum problem (part 2) Play Video
54 Introduction to work and energy | Work and energy Play Video
55 Work and energy (part 2) | Work and energy Play Video
56 Conservation of energy | Work and energy Play Video
57 Work/energy problem with friction | Work and energy Play Video
58 Introduction to mechanical advantage | Work and energy Play Video
59 Mechanical advantage (part 2) | Work and energy Play Video
60 Mechanical advantage (part 3) | Work and energy Play Video
61 Center of mass | Impacts and linear momentum Play Video
62 Introduction to torque | Moments, torque, and angular momentum Play Video
63 Moments | Moments, torque, and angular momentum Play Video
64 Moments (part 2) | Moments, torque, and angular momentum Play Video
65 Unit vector notation | Two-dimensional motion Play Video
66 Unit vector notation (part 2) | Two-dimensional motion Play Video
67 Projectile motion with ordered set notation Play Video
68 Centripetal force and acceleration intuition Play Video
69 Visual understanding of centripetal acceleration formula Play Video
70 Relationship between angular velocity and speed Play Video
71 Calculus proof of centripetal acceleration formula Play Video
72 Loop de loop question | Centripetal force and gravitation Play Video
73 Loop de loop answer part 1 | Centripetal force and gravitation Play Video
74 Loop de loop answer part 2 | Centripetal force and gravitation Play Video
75 Acceleration due to gravity at the space station Play Video
76 Space station speed in orbit | Centripetal force and gravitation Play Video
77 Conservation of angular momemtum Play Video
78 Introduction to Newton's law of gravitation Play Video
79 Gravitation (part 2) | Centripetal force and gravitation Play Video
80 Intro to springs and Hooke's law | Work and energy Play Video
81 Potential energy stored in a spring | Work and energy Play Video
82 Spring potential energy example (mistake in math) Play Video
83 Introduction to harmonic motion | Oscillatory motion Play Video
84 Harmonic motion part 2 (calculus) | Oscillatory motion Play Video
85 Harmonic motion part 3 (no calculus) | Oscillatory motion Play Video
86 Pressure and Pascal's principle (part 1) | Fluids Play Video
87 Pressure and Pascal's principle (part 2) | Fluids Play Video
88 Pressure at a depth in a fluid | Fluids Play Video
89 Finding height of fluid in a barometer | Fluids Play Video
90 Archimedes principle and buoyant force | Fluids Play Video
91 Buoyant force example problems | Fluids Play Video
92 Volume flow rate and equation of continuity | Fluids Play Video
93 Bernoulli's equation (part 1) | Fluids Play Video
94 Bernoulli's equation (part 2) | Fluids Play Video
95 Bernoulli's equation (part 3) | Fluids Play Video
96 Bernoulli's equation (part 4) | Fluids Play Video
97 Bernoulli's example problem | Fluids Play Video
98 Thermodynamics part 1: Molecular theory of gases Play Video
99 Thermodynamics part 2: Ideal gas law | Thermodynamics Play Video
100 Thermodynamics part 3: Kelvin scale and Ideal gas law example Play Video
101 Thermodynamics part 4: Moles and the ideal gas law Play Video
102 Thermodynamics part 5: Molar ideal gas law problem Play Video
103 Electrostatics (part 1): Introduction to Charge and Coulomb's Law Play Video
104 Electric field | Electric charge, electric force, and voltage Play Video
105 Proof: Field from infinite plate (part 1) | Electrostatics | Electrical engineering Play Video
106 Proof: Field from infinite plate (part 2) | Electrostatics | Electrical engineering Play Video
107 Electric potential energy | Electrostatics | Electrical engineering Play Video
108 Electric potential energy (part 2-- involves calculus) Play Video
109 Voltage | Electric charge, electric force, and voltage Play Video
110 Capacitance | Circuits Play Video
111 Introduction to circuits and Ohm's law | Circuits Play Video
112 Resistors in series | Circuits Play Video
113 Resistors in parallel | Circuits Play Video
114 Example: Analyzing a more complex resistor circuit Play Video
115 Cross product 1 | Magnetic forces, magnetic fields, and Faraday's law Play Video
116 Cross product 2 | Magnetic forces, magnetic fields, and Faraday's law Play Video
117 Cross product and torque | Moments, torque, and angular momentum Play Video
118 Introduction to magnetism Play Video
119 Magnetic force on a charge Play Video
120 Magnetic force on a proton example (part 1) Play Video
121 Magnetic force on a proton example (part 2) Play Video
122 Magnetic force on a current carrying wire Play Video
123 Magnetic field created by a current carrying wire Play Video
124 Magnetic force between two currents going in the same direction Play Video
125 Magnetic force between two currents going in opposite directions Play Video
126 Electric motors (part 1) Play Video
127 Electric motors (part 2) Play Video
128 Electric motors (part 3) Play Video
129 Induced current in a wire Play Video
130 The dot product | Magnetic forces, magnetic fields, and Faraday's law Play Video
131 Dot vs. cross product Play Video
132 Calculating dot and cross products with unit vector notation Play Video
133 Introduction to waves | Mechanical waves and sound Play Video
134 Amplitude, period, frequency and wavelength of periodic waves Play Video
135 Introduction to the doppler effect | Mechanical waves and sound Play Video
136 Doppler effect formula for observed frequency Play Video
137 Doppler effect formula when source is moving away Play Video
138 When the source and the wave move at the same velocity Play Video
139 Mach numbers | Mechanical waves and sound Play Video
140 Specular and diffuse reflection | Geometric optics Play Video
141 Specular and diffuse reflection 2 | Geometric optics Play Video
142 Refraction and Snell's law | Geometric optics Play Video
143 Refraction in water | Geometric optics Play Video
144 Snell's law example 1 | Geometric optics Play Video
145 Snell's law example 2 | Geometric optics Play Video
146 Total internal reflection | Geometric optics Play Video
147 Virtual image | Geometric optics Play Video
148 Parabolic mirrors and real images | Geometric optics Play Video
149 Parabolic mirrors 2 | Geometric optics Play Video
150 Convex parabolic mirrors | Geometric optics Play Video
151 Convex lenses | Geometric optics Play Video
152 Convex lens examples | Geometric optics Play Video
153 Concave lenses | Geometric optics Play Video
154 Object image and focal distance relationship (proof of formula) Play Video
155 Object image height and distance relationship | Geometric optics Play Video
156 Viewing g as the value of Earth's gravitational field near the surface Play Video