Physics | AUX

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6 of 9 units live · actively building

Unit 1: Introduction to Physics

1.1

Units and Conversions

Dimensional analysis and unit conversion across numbers, tables, and graphs. Simple calculator only, so the method has to be automatic.

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Part 1: SI and Derived Units

Unit 1.1

Part 2: Unit Conversion

Unit 1.1

Part 3: Graphing

Unit 1.1

Part 4: Packing Fractions

Unit 1.1

Part 5: Trendlines and Slope

Unit 1.1

Review: Hard Practice Problems

Unit 1.1

PDFs

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1.1 — Hard Practice Problems

PDF ↗ Open

1.2

Scientific Notation

Converting to and from scientific notation across data sets and graphs. Simple calculator only.

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Part 1: Scientific Notation

Unit 1.2

Part 2: Arithmetic and Renormalization

Unit 1.2

Part 3: Estimation, Graph Reading, and Unit Tricks

Unit 1.2

Review: Hard Practice Problems

Unit 1.2

PDFs

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1.2 — Mixed Hard Practice (with 1.1)

PDF ↗ Open

Unit 2: Forces and Motion

2.1

Newton's Laws and Forces

All three laws plus free body diagrams in different situations. Know which law applies, how to set up net force, and what each arrow on the FBD actually means.

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What Is a Force? Types of Forces

Unit 2.1

Newton's First Law: Why Balanced Forces Doesn't Mean Rest

Unit 2.1

F = ma Explained: Inertia, Acceleration, and Why g Never Changes

Unit 2.1

Newton's Third Law: The Real Test for an Action-Reaction Pair

Unit 2.1

How to Draw a Free Body Diagram (and Why Weight Isn't Mass)

Unit 2.1

How to Split Forces into Vectors and find Net Forces

Unit 2.1

Atwood Machines — Two Blocks, One Pulley, One Shared Acceleration

Unit 2.1

Horizontal Block and Hanging Mass: With and Without Friction

Unit 2.1

Inclined Planes — Splitting Gravity into mg sinθ and mg cosθ

Unit 2.1

Incline-to-Table Pulley Systems: Adding Friction on Both Sides at Once

Unit 2.1

Dual-Incline Pulley Systems: Find the Direction Before You Find the Acceleration

Unit 2.1

Static Equilibrium: Why You Need Two Equations, Not Just One

Unit 2.1

Hardest Newton's Laws Problems — 5 Bombshells From the Forces Practice Set

Unit 2.1

PDFs

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2.1 — Forces Hard Practice Problems

PDF ↗ Open

2.2

Kinematics, Motion Graphs, and Projectile Motion

FBDs, motion graphs, and kinematic equations. All four problem types in one standard, and all four come back on every test. The one you do not want to be unprepared for.

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Part 1: Kinematics, Motion Graphs, and Projectile Motion

Unit 2.2

Part 2: Kinematics, Motion Graphs, and Projectile Motion

Unit 2.2

Part 3: Kinematics, Motion Graphs, and Projectile Motion

Unit 2.2

Part 4: Slope & Area — Linking Position, Velocity & Acceleration

Unit 2.2

Part 5: The Big 5 Kinematic Equations

Unit 2.2

Part 6: Horizontal vs. Vertical Motion in Projectile Problems

Unit 2.2

Part 7: Splitting a Launch Angle: vᵢcosθ and vᵢsinθ Explained

Unit 2.2

Part 8: Time of Flight: The Physics Behind Duration

Unit 2.2

Part 9: Range Formula and Concept Explained and Derived

Unit 2.2

Part 10: Max Height in Projectile Motion: Derived and Explained

Unit 2.2

Review: Unbelievably Hard Kinematics and Projectile Motion Questions

Unit 2.2

PDFs

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2.2 — Hard Practice Problems

PDF ↗ Open

Extras Recommended! These help build real understanding of the concepts.

Deriving the Big 5 Kinematic Equations

Unit 2.2 — Extra

2.3

Why g Is Constant

Why gravitational acceleration never changes regardless of mass — the core idea behind F = ma and inertia.

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F = ma Explained: Inertia, Acceleration, and Why g Never Changes

Unit 2.3

Unit 3: Torque and Center of Mass

3.1

Definitions and Calculations

Torque, center of mass, rotational equilibrium, levers, mechanical advantage, and trusses. Qualitative and quantitative problems both appear.

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Torque, Lever Arm, and the CW vs CCW Sign Trap

Unit 3.1

Center of Mass: Finding It and Why Objects Tip

Unit 3.1

Rotational Equilibrium and the Hanging Mobile Method

Unit 3.1

The Hardest Torque, Center of Mass, and Equilibrium Problems Solved

Unit 3.1

PDFs

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3.1 — Torque, Center of Mass & Equilibrium Hard Practice

PDF ↗ Open

📌 Pulley systems and mechanical advantage problems and videos are in Unit 4.

Unit 4: Work, Energy, and Power

4.1

Energy Definitions and Calculations

Work, power, kinetic and potential energy in a closed system, pulleys, and mechanical advantage. Multiple choice and short free response.

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Videos

Part 1: Forms of Energy: Formulas and Conservation

Unit 4.1

Part 2: Work and Power Explained: How They Tie In to Energy

Unit 4.1

Part 3: Path Independence

Unit 4.1

Part 4: Mechanical Advantage - IMA and AMA

Unit 4.1

Part 5: Pulleys Explained: Which Ropes to Count?

Unit 4.1

Hardest Energy Definitions Problems: Work, Power, Pulleys, and Machines

Unit 4.1

PDFs

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4.1 — Energy Definitions Hard Practice

PDF ↗ Open

4.2

Conservation of Energy

Multi-step closed system problems using energy bar charts. Setting up the right equation for an unfamiliar situation, and knowing what each bar actually represents.

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Part 1: Conservation of Energy Master Equation

Unit 4.2

Part 2: Frictionless Ramps and the Friction That Breaks Them

Unit 4.2

Part 3: Spring Energy

Unit 4.2

Part 4: Energy for Connected Systems and the Atwood Machine

Unit 4.2

Hardest Conservation of Energy Problems: One Equation, Every Trap

Unit 4.2

PDFs

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4.2 — Conservation of Energy Hard Practice

PDF ↗ Open

Unit 5: Momentum and Impulse

5.1

Momentum and Impulse

Elastic and inelastic collisions in 1D and 2D. Impulse-momentum theorem, conservation of momentum, force vs time graphs, and velocity vs time graphs.

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Part 1: Momentum and Impulse Explained Simply

Unit 5.1

Part 2: The Force-Time Trade Off and an Introduction to Conservation of Momentum

Unit 5.1

Part 3: Force vs Time Graphs and Impulse as Area

Unit 5.1

Part 4: Conservation of Momentum — Explained Simply

Unit 5.1

Part 5: How to Use MVP Charts

Unit 5.1

Part 6: Elastic VS Inelastic Collisions: Equations and Differences

Unit 5.1

Part 7: Momentum: Explosions and 2D Collisions

Unit 5.1

Review: Hardest Momentum and Impulse Questions, Solved with Depth

Unit 5.1

PDFs

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5.1 — Momentum and Impulse Hard Practice

PDF ↗ Open

Unit 6: Fields, Coulomb's Law, Gravitation, and Centripetal Force

6.1

Forces and Circular Motion

Coulomb's law, Newton's law of gravitation, and circular motion of objects and charges. Solving for force, charge, mass, and separation. Two objects and beyond.

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Part 1: Coulomb's Law — Force, Sign, and the Scaling Trap

Unit 6.1

Part 2: How To Calculate Net Force From Multiple Charges

Unit 6.1

Part 3: Centripetal Force — The Inward Pull

Unit 6.1

Part 4: Newton's Law of Gravitation

Unit 6.1

Part 5: Centripetal Acceleration Mingled with Gravity and Charge

Unit 6.1

Review: Hardest Centripetal Acceleration, Universal Gravitation, and Charge Problems Solved

Unit 6.1

PDFs

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6.1 — Forces and Circular Motion Hard Practice

PDF ↗ Open

6.2

Fields

Electric and gravitational field diagrams for multiple objects. Direction, relative magnitude, attractive vs repulsive, charging by friction, and what those lines mean for the force on a charge or mass.

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Part 1: Electric Fields — Magnitude, Direction, and Drawing

Unit 6.2

Part 2: Drawing Electric Fields — Three Charges, Six Rules

Unit 6.2

Part 3: Gravitational Fields — True Meaning of Gravity

Unit 6.2

Part 4: The Triboelectric Series — Who Gives, Who Takes

Unit 6.2

Review: Hardest Electric and Gravitational Field Problems Solved

Unit 6.2

PDFs

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6.2 — Fields Hard Practice

PDF ↗ Open

Unit 7: Electricity and Circuits

7.1

Ohm's Law and Circuits

Current, voltage, and resistance in series, parallel, and mixed circuits. Complex multi-branch circuits at the top level. Layer by layer, they become solvable.

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7.2

Power, Capacitance, and Advanced Components

Electrical power, electric potential and energy, capacitance, diodes, and transistors. The components most students ignore until they see them on the test.

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Unit 8: Electromagnetism

8.1

Electromagnetism

Motors, generators, solenoids, right-hand rules, flux, Faraday's law, and Lenz's law. Magnetism and electricity as one connected system.

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Unit 9: Waves

9.1

Waves and Sound

Wave speed, sound, Doppler effect, resonance, Hooke's Law, earthquakes, and waves in different mediums. Everything that oscillates.

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9.2

Light and Color

EM spectrum, wave-particle duality, polarization, interference, refraction, and photoelectric effect. How light actually behaves, and why it breaks the rules you'd expect.

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Understand it.Not just survive it.

Click a unit to see its videos.

Understand it.
Not just survive it.