Physics for Beginners
Physics from zero in three sections: mechanics, electricity and magnetism, and optics, waves and modern physics. You solve every problem yourself, and each step is checked.
201 lessons200 challenges662 quiz questions
- Beginner friendly
Hands-on interactive lessons
Audio narration on every lesson
Quizzes to test your knowledge
Free certificate of completion
Watch the physics move
Every lesson draws its situation, and the motion plays out on screen. Here are six from the course.
Projectiles
A ball launched at 50°: equal-time ghosts show it slow on the way up and speed up on the way down.
Charged plates
An electron fired between two charged plates curves toward the positive plate.
Interference
Two sources make ripples that add where crests meet and cancel along the quiet lines.
Orbits
A satellite circles the Earth, held on its path by gravity.
Magnetic forces
A charge in a magnetic field moves on a circle, because the force always points to the centre.
Lenses
Rays from the tip of the arrow cross again at the tip of the image: a converging lens makes a real, inverted image.
Syllabus
Section 1
MechanicsDedicated page
Start sectionStartForces, motion and energy from zero: vectors and Newton's laws, friction and inclines, kinematics and projectiles, work and energy, springs, momentum and collisions, circular motion, simple harmonic motion and gravitation.Introduction
3 lessons38Vectors and Newton's Laws
11 lessons1952Friction
5 lessons924Inclined Planes
6 lessons1130Kinematics in 1D
6 lessons1130Vertical Motion
4 lessons718Projectile Motion
5 lessons924Kinematics and Newton
4 lessons718Project: Delivery Drone
5 lessons5Work and Energy
7 lessons1336Springs
4 lessons718Elastic Energy
4 lessons718Impulse and Momentum
6 lessons1130Momentum in 2D
4 lessons718Circular Motion
6 lessons1130Simple Harmonic Motion
6 lessons1129Gravitation
8 lessons1538Final Challenges
3 lessons3Section 2
Electricity and MagnetismDedicated page
Start sectionStartCharges and fields from zero: Coulomb's law, the electric field and potential, conductors and capacitors, electric circuits and Kirchhoff's laws, magnetic fields and forces, and induction.Electric Charge and Force
4 lessons714The Electric Field
5 lessons916Energy and Potential
4 lessons712Charged Conductors
3 lessons57Capacitors
4 lessons711Current and Resistance
5 lessons915Real Batteries
4 lessons79Kirchhoff's Laws
4 lessons79Capacitors in Circuits
4 lessons79Magnetic Fields
4 lessons79Magnetic Forces
5 lessons913Induction
5 lessons912Section 3
Optics, Waves and Modern PhysicsDedicated page
Start sectionStartLight and matter from zero: reflection, refraction and lenses, waves and interference, light as a wave through slits and gratings, photons and the photoelectric effect, the Bohr atom, and the nucleus: radioactive decay, half-life and binding energy.Reflection and Refraction
7 lessons1320Plane Mirrors
4 lessons79Thin Lenses
6 lessons1114Mechanical Waves
7 lessons1315The Ripple Tank
4 lessons76Light as a Wave
5 lessons98Photons
6 lessons1110The Bohr Atom
4 lessons78The Nucleus
6 lessons119Nuclear Energy
4 lessons76
Learn by Solving
Solve every problem the way physicists do: choose your axes, draw the forces, write the equations with units, and the board checks each step.
Draw every force on the body, pick your axes, then write Newton's second law along them.
Build Your Physics Streak
Stay consistent and watch your progress grow! Track your daily physics habit, protect your streak with freeze days, and earn rewards for showing up every day.
12 days streak
Return tomorrow to keep your streak!
January 2026
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Double or Nothing
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You're Not Alone
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Promotion zoneEvery way to learn
Read, listen, test yourself, ask the AI about your own steps, or look up anything you've already covered. Every lesson meets you where you are.
A scalar is a size only, like a mass of 3 kg or a time of 4 s. A vector has a size and a direction.
A force is a push or a pull, measured in newtons: a push of 50 N to the right is a vector.
A vector is drawn as an arrow. Its length shows the size, and the arrow points in its direction.
Earn a Certificate
Earn a certificate when you complete a section. Add it to your LinkedIn profile to show how far your physics has come.
Certificate of Completion
Physics Mechanics
Add to LinkedInWhy learn physics with Coddy
- You set up the problem. Pick the axes, draw every force on the body and split the slanted ones yourself.
- Equations with units. Write the law along each axis with its units, and a missing or wrong unit is caught.
- See it move. Ramps, orbits, charged plates, magnets, lenses and ripples are drawn and animated, so the numbers mean something.
- Free certificate of completion you can share on LinkedIn or your resume. It's proof you finished an interactive Physics course, not just watched videos.
Frequently asked questions about this course
What is mechanics in physics?
The part of physics about forces and motion: why things speed up, slow down, slide, fall, bounce, swing and orbit. It is where every physics course starts.
Is physics hard for beginners?
Mostly it is new habits: drawing the forces and choosing a positive direction before writing anything. The course starts from vectors and adds one idea per lesson.
What math does this course use?
Algebra and the sine and cosine of an angle. The first lesson reviews right triangles, so you can start with only basic algebra.
What topics does the course cover?
Three sections. Mechanics: vectors and Newton's laws, friction, inclines, motion, projectiles, energy, momentum, circular motion and gravitation, with a drone project and final challenges. Electricity and magnetism: Coulomb's law, fields and potential, capacitors, circuits, magnetic forces and induction. Optics, waves and modern physics: reflection, refraction, lenses, interference, photons, the Bohr atom and the nucleus.
In what order should I learn the sections?
Start with mechanics, then electricity and magnetism, then optics, waves and modern physics. Forces, energy and vectors from mechanics come back in the other two, so each section builds on the one before.
Is the physics course free?
Yes, every lesson and problem is free. Pro removes the daily limit and adds unlimited help from the AI tutor.
