Master Physics Laws and Equations with AI Flashcards

Forces, motion, energy, circuits, and waves — turned into recall cards so the equations are ready when you need them.

Physics is built on a compact set of laws and equations that you have to recall instantly and apply correctly under exam pressure. Our physics flashcard maker turns your notes, a textbook section, or a topic such as kinematics into question-and-answer cards in about thirty seconds, so Newton’s laws, kinematic equations, and the conditions for energy conservation are automatic before you reach for a calculator.

The AI does more than ask you to state a formula: it builds cards around what each variable means, the units a quantity is measured in, and the cue in a problem that tells you which equation to reach for. It covers the sequence most courses follow — mechanics, energy and momentum, thermodynamics, electricity and magnetism, waves, and optics — and keeps notation clean so the cards mirror your class. Edit any card to add a free-body diagram description or the constant you keep forgetting, then drill the whole set with spaced repetition until the relationships are second nature.

Key Features

⚛️

Laws & Equations

Turn every law and equation into a card that also tests when and how to apply it.

📐

Units & Variables

Cards capture what each symbol means and the units behind it, where students lose marks.

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Problem Cues

Generate cards that pair a problem type with the equation and first step it calls for.

⚡

Instant Decks

Paste notes or type a topic and get a full physics deck without writing cards by hand.

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Spaced Repetition

Drill formulas and constants on a schedule that surfaces the ones you keep missing.

✏️

Editable

Add a diagram description, a special case, or your teacher’s preferred notation.

How It Works

Add Your Material

Paste physics notes or a section, or type a topic like “circuits”.

AI Writes Cards

It extracts laws, equations, and definitions and turns them into Q&A.

Refine

Add worked detail or focus the deck on the unit you are tested on.

Drill to Recall

Use quizzes and spaced repetition until the equations come back instantly.

Free Physics Formulas flashcards: 32-card starter set

This set covers the formulas that appear in nearly every first-year physics course, each with its SI units and the condition under which it applies (for example, constant acceleration). The kinematic, work, kinetic energy, centripetal force, Coulomb, Ohm and resistor formulas were read against OpenStax College Physics 2e; the remaining standard formulas are written from textbook definitions. It is a starter set, so add the formulas your own course emphasises, such as rotational motion or thermodynamics.

No signup needed. Progress saves in your browser, and in your account if you sign in. Reviewed 2026-10-17.

Kinematics (6)

Velocity after time t with constant acceleration (no displacement term)?

v = v0 + a t. Valid only when acceleration is constant. Units: m/s.

Position with constant acceleration?

x = x0 + v0 t + (1/2) a t^2. Use it when the final velocity is not given.

Velocity without time, constant acceleration?

v^2 = v0^2 + 2a(x - x0). Use it when time is not given or needed.

Average velocity for constant acceleration?

v_avg = (v0 + v) / 2. This shortcut works only if acceleration is constant.

Displacement from average velocity?

x = x0 + v_avg t.

What acceleration should you use for free fall near Earth and in which direction?

g = 9.80 m/s^2 downward, ignoring air resistance. Use a = -g if up is positive.

Forces and energy (11)

Newton second law and its unit?

Net force F_net = m a. Force is in newtons: 1 N = 1 kg m/s^2.

What does Newton third law say?

When object A exerts a force on B, B exerts an equal-magnitude, opposite-direction force on A. The two forces act on different objects.

Weight formula?

W = m g. Weight is a force in newtons; mass is in kilograms and does not change with location.

Kinetic friction formula?

f_k = mu_k N, where N is the normal force. Static friction has a maximum of mu_s N.

Hooke law for a spring?

F = -k x. The restoring force opposes the displacement; k is the spring constant in N/m.

Work done by a constant force?

W = F d cos(theta), where theta is the angle between force and displacement. Unit: joule (1 J = 1 N m).

Kinetic energy formula?

KE = (1/2) m v^2, in joules.

Gravitational potential energy near Earth?

PE = m g h, with h measured from a chosen reference height.

Work-energy theorem?

The net work done on an object equals its change in kinetic energy: W_net = delta KE.

Power formula and unit?

P = W / t, in watts (1 W = 1 J/s). Also P = F v for a constant force along the motion.

When is mechanical energy conserved?

When only conservative forces (such as gravity and ideal springs) do work. Then KE + PE stays constant.

Momentum, circular motion and gravity (7)

Linear momentum formula and unit?

p = m v, in kg m/s. It is a vector.

Impulse-momentum theorem?

Impulse J = F_avg delta t = delta p, the change in momentum. Unit: N s (same as kg m/s).

What is conserved in an elastic collision versus an inelastic one?

Momentum is conserved in all collisions of a closed system. Kinetic energy is conserved only in elastic collisions.

Centripetal acceleration formula?

a_c = v^2 / r, directed toward the center of the circle.

Centripetal force formula?

F_c = m v^2 / r. It is a net inward force supplied by tension, gravity, friction or a normal force, not a separate force.

Speed of an object in uniform circular motion with period T?

v = 2 pi r / T. The period T is the time for one revolution.

Newton law of universal gravitation?

F = G m1 m2 / r^2, with G approximately 6.67 x 10^-11 N m^2/kg^2.

Electricity and waves (8)

Coulomb law?

F = k q1 q2 / r^2, with k approximately 8.99 x 10^9 N m^2/C^2. Like charges repel, opposite charges attract.

Ohm law and its unit?

V = I R. Voltage in volts, current in amperes, resistance in ohms.

Electrical power formula?

P = I V (also I^2 R and V^2 / R), in watts.

Equivalent resistance in series vs parallel?

Series: R_eq = R1 + R2 + ... Parallel: 1/R_eq = 1/R1 + 1/R2 + ...

Electric field definition?

E = F / q, the force per unit positive test charge. Unit: N/C (equal to V/m).

Wave speed equation?

v = f lambda: speed (m/s) equals frequency (Hz) times wavelength (m).

Relationship between period and frequency?

T = 1 / f. A wave with frequency 50 Hz has a period of 0.02 s.

Index of refraction and Snell law?

n = c / v, and n1 sin(theta1) = n2 sin(theta2). The speed of light in vacuum c is approximately 3.00 x 10^8 m/s.

What this set covers

Covered

Kinematics, forces, energy and power, momentum, circular motion and gravity, circuits, waves and light

Best used for

Introductory algebra-based or calculus-based physics quizzes and exams

Not covered

Rotational dynamics, fluids, thermodynamics, magnetism and modern physics

Note

Check whether your exam provides a formula sheet; if so, focus on when and why to use each formula

How to study this set

Formulas stick when you pair them with units, conditions and a quick example. Do not just recognise the equation; practise choosing it.

1
Day 1
Say each formula aloud with its units, then write it from memory. Add one line: which variable is missing from the equation?
2
Days 2-7
After each card, solve one tiny numerical example by hand. Check the units come out right before you flip.
3
Week 2
Move to "which formula?" practice: read a word problem and pick the equation before computing anything.
4
Final week
Mix kinematics, energy and momentum cards so you have to choose between them. Re-derive any formula you keep missing.

Spaced repetition schedules each card to come back just before you would forget it, so reviews get shorter as your recall gets stronger. Cards you miss come back sooner.

Common mistakes to avoid

Using kinematic equations when acceleration is not constant

The equations here assume constant acceleration. For changing acceleration (springs, air drag) you need other methods.

Mixing up mass and weight

Mass is in kg and stays constant; weight W = mg is a force in newtons. Many setups need mass, not weight.

Forgetting the vector direction

Velocity, momentum and force have signs. Choose a positive direction at the start and stick with it.

Treating centripetal force as a new force

It is the name for the net inward force. Draw the real forces (tension, gravity, normal) and sum them.

Make your own from your notes

A starter set is a head start, not your whole course. Your class notes, slides and textbook are what your teacher actually tests, so turn them into cards too.

Put the quantity on the front ("kinetic energy") and the formula plus unit on the back.
Add the condition on the back ("constant acceleration only") for formulas with limits.
Paste the formula sheet from your course and ask for one card per formula, not one card per chapter.
Keep worked problems out of the deck. Make a second deck of "which formula would you use?" prompts from your homework.

Generate cards from a topic or notes Turn a PDF into flashcards

Physics Formulas flashcards: questions

Should I memorize physics formulas or learn to derive them?

Both help, but derivation is more reliable. Knowing where v = v0 + at comes from means you can rebuild it under stress. If your exam gives a formula sheet, spend more time on when to use each one.

What units should I always include?

Use SI units: meters, kilograms, seconds, newtons, joules, watts, volts, amperes, ohms, hertz. Convert before substituting numbers.

How are impulse and work different?

Impulse is force times time and changes momentum. Work is force times displacement and changes kinetic energy.

Are these formulas the same in algebra-based and calculus-based physics?

The formulas are the same, but calculus-based courses derive them with integrals and sometimes use more general forms. This deck covers the standard forms.

Sources and review

These cards are an independent study aid, not official exam content, and are not affiliated with or endorsed by any exam body or publisher. They were written by hand and checked against the sources below on 2026-10-17. Always confirm details with your course materials and the current official documents.

OpenStax College Physics 2e: Motion Equations for Constant Acceleration in One Dimension — Checked the five kinematic equations and the constant-acceleration condition.
OpenStax College Physics 2e: Work, the Scientific Definition — Read for W = F d cos(theta) and the joule.
OpenStax College Physics 2e: Kinetic Energy and the Work-Energy Theorem — Read for KE = (1/2) m v^2 and the work-energy theorem.
OpenStax College Physics 2e: Ohm's Law — Read for V = IR. Other formulas (Newton laws, momentum and impulse, gravitation, Coulomb, waves, Snell) are standard introductory physics written from general reference, not individually checked against a page.

Need a bigger deck than the starter set?

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Quick facts

Without an account: 1 deck per day, up to 10 cards per deck (10 decks in total). Paste notes or type a topic; no sign-up.
Free account: 3 free decks; the first 10 cards of each deck are free, plus cloud sync and spaced-repetition review.
Documents: Text-based PDF and Word import. Your first import is free with a free account (up to 15 cards).
Export: Anki (.apkg), CSV and TSV (imports into Quizlet and spreadsheets). The first export is free; Pro exports without limit.
Study modes: Flip cards, multiple-choice quiz, typed answers with smart answer checking, spaced repetition and printable cards.
Pro: $9.99/month or $95.88/year: unlimited decks, up to 100 cards per deck. 7-Day Pass: $4.99 one-time; Exam Pass: $19.99 one-time (3 months). Passes do not renew.
Languages: Cards in any language; site in English, French, German and Polish.

Updated 2026-10-28 by the FlashcardMaker.me team. All limits and prices: FlashcardMaker.me facts.

Frequently Asked Questions

Does it work for AP or IB Physics?

Yes. Add your units or notes and the cards cover mechanics, energy, electricity, and waves at the depth those exams expect, including when to apply each law.

Will it handle equations and units?

Yes. The AI keeps notation readable and builds cards that test variable meanings and units, not just the bare formula.

Can I focus on one topic like mechanics?

Yes. Type the topic or paste notes for a single unit and the deck stays focused on it.

Is the physics flashcard maker free?

Yes, you can try it for free. Free users get a preview deck; Pro users and credit holders unlock unlimited full physics decks.

Can I edit the cards?

Yes. Every card is editable, so you can add diagrams, constants, or your instructor’s notation.

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