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Physics for Beginners

Mechanics from zero: forces and Newton's laws, motion and projectiles, energy, momentum, circular motion and gravitation. You solve every problem yourself, and each step is checked.

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5,673,659+ learners enrolled

145 lessons144 challenges551 quiz questions

Watch the physics move

Every lesson draws its situation, and the motion plays out on screen. Here are six from the course.

  • A crate slides down a 30° ramp and speeds up as it goes.

    Inclines

    A crate slides down a 30° ramp and speeds up as it goes.

  • A ball launched at 50°: equal-time ghosts show it slow on the way up and speed up on the way down.

    Projectiles

    A ball launched at 50°: equal-time ghosts show it slow on the way up and speed up on the way down.

  • A moving cart rolls toward one at rest: the start of every collision problem.

    Momentum

    A moving cart rolls toward one at rest: the start of every collision problem.

  • A block on a spring swings back and forth about its rest position.

    Springs

    A block on a spring swings back and forth about its rest position.

  • A pendulum swings through its lowest point, fastest at the bottom.

    Pendulums

    A pendulum swings through its lowest point, fastest at the bottom.

  • A satellite circles the Earth, held on its path by gravity.

    Orbits

    A satellite circles the Earth, held on its path by gravity.

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Syllabus

2 sections145 lessons144 challenges551 quiz questions
  1. Section 1

    MechanicsDedicated page

    Start sectionStartExpandCollapse    Forces, 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.94 lessons163 challenges415 questions

    Vectors and Newton's Laws

    11 lessons1954

    Friction

    5 lessons924

    Inclined Planes

    6 lessons1130

    Kinematics in 1D

    6 lessons1130

    Vertical Motion

    4 lessons718

    Projectile Motion

    5 lessons924

    Kinematics and Newton

    4 lessons718

    Project: Delivery Drone

    5 lessons5

    Work and Energy

    7 lessons1336

    Springs

    4 lessons718

    Elastic Energy

    4 lessons718

    Impulse and Momentum

    6 lessons1130

    Momentum in 2D

    4 lessons718

    Circular Motion

    6 lessons1130

    Simple Harmonic Motion

    6 lessons1129

    Gravitation

    8 lessons1538

    Final Challenges

    3 lessons3
  2. Section 2

    Electricity and Magnetism

    Start sectionStartExpandCollapse    Charges 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.51 lessons90 challenges136 questions

    Electric Charge and Force

    4 lessons714

    The Electric Field

    5 lessons916

    Energy and Potential

    4 lessons712

    Charged Conductors

    3 lessons57

    Capacitors

    4 lessons711

    Current and Resistance

    5 lessons915

    Real Batteries

    4 lessons79

    Kirchhoff's Laws

    4 lessons79

    Capacitors in Circuits

    4 lessons79

    Magnetic Fields

    4 lessons79

    Magnetic Forces

    5 lessons913

    Induction

    5 lessons912
What you get
Everything you'll use to learn physics

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.

Physics board
Newton's laws
Draw every force on the body, pick your axes, then write Newton's second law along them.F - f_k = m aF = 20 N, f_k = 5 N, m = 5 kga = 3 m/s²

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!

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You're Not Alone

Compete on global leaderboards, invite friends to earn rewards, and celebrate each other's wins. Physics is better with friends!

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Every 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.

What is a Vector?
Audio

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.

1xSarah

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.

CoddyCertificate of Completion
This certifies thatJohn Doehas successfully completed
physics iconPhysics Mechanics
Verified
DateJan 2026
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Why 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, projectiles, springs and orbits 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?

Vectors and Newton's laws, friction, inclined planes, motion in a line, free fall, projectiles, work and energy, springs, momentum and collisions, circular motion, simple harmonic motion and gravitation, with a drone project and final challenges.

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.

Do I get a Physics certificate when I finish?

Yes. When you complete the Physics course you receive a free certificate of completion that you can share on LinkedIn or add to your resume.
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