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Physics with Deepak Kumar

Physics doesn’t have to be confusing.

I teach students to understand the physics behind the equations, build a problem-solving method they can rely on, and walk into demanding international examinations knowing what to do with an unfamiliar question.

Current focus

IB Physics · AP Physics

A Level, WACE and Singapore O Level are also taught, on the courses page.

Deepak Kumar teaching a physics lesson, annotating an exam question on his tablet
Deepak Kumar, teachingTeaching since 2019

Who this is for

Wherever you are with physics, we start there

  1. 01

    “Honestly, I’m just confused. I need someone to help me make sense of physics from the ground up.”

  2. 02

    “I know the formulas. I just don’t know which one to use or how I’m supposed to know.”

  3. 03

    “I understand the topic, but when the question changes slightly, I don’t know how to apply what I’ve learned.”

  4. 04

    “I understand the concepts. I just want harder problems to build speed, accuracy, and confidence.”

The method

How we learn to apply Physics

  1. 01

    Understand

    Identify what is given, what is being asked, and any conditions or constraints that define the situation.

  2. 02

    Visualize

    Turn the words into Physics using diagrams, free-body diagrams, graphs, ray diagrams, circuits, or other useful representations.

  3. 03

    Apply

    Identify the physical principle, then choose the law or equation that actually fits the situation—not simply one containing familiar variables.

  4. 04

    Solve

    Work systematically through the unknowns, checking signs, units, directions, assumptions, and whether the final answer makes physical sense.

  5. 05

    Master

    Repeat the framework until individual concepts become secure, then progress to complex problems combining multiple concepts or topics.

Current curriculum focus

IB Physics and AP Physics

Each syllabus is treated on its own terms: its command language, its assessment structure and its standard for a strong answer.

IB Physics

Standard and Higher Level, taught around the three papers and the internal assessment.

AP Physics

Algebra-based and calculus-based courses, with attention to the reasoning the free-response section asks for.

Free resources

Free IB Physics resources

Three things I give my own students: find your gaps, learn to read the question, then use the formula sheet properly. Each one fixes a specific reason marks get lost.

KNOW · Free · IB Physics

IB Physics Ultimate Conceptual Checklist

A complete SL + HL revision tracker designed to help you see exactly where you stand. Every concept is broken down across Recall, Apply and Transfer, so you can tell the difference between simply recognising a topic and actually being able to use it in unfamiliar exam questions.

IB Physics Ultimate Conceptual Checklist preview showing Wave Behaviour and Simple Harmonic Motion mastery rows
A page from the resource

DECODE · Free · IB Physics

IB Physics Exam Decoder

IB Physics questions often hide the most important information in the wording. The Exam Decoder helps you identify what terms like constant, elastic, negligible, isolated, uniform, or equilibrium are really telling you about the physics before you even start calculating.

IB Physics Exam Decoder preview showing D.3 Motion in Electromagnetic Fields and D.4 Induction tables with condition traps and worked formulas
A page from the resource

REFERENCE · Free · IB Physics

IB Physics Data Booklet on Steroids

The official data booklet gives you the equations. This one helps you understand and use them. The Data Booklet on Steroids adds clear variable definitions, useful relationships, conditions, diagrams, reminders, and extra formulas that make the booklet far more practical during revision and problem solving.

IB Physics Data Booklet on Steroids preview showing A.1 kinematics, A.2 forces and momentum, and A.3 work energy and power formulas with annotations
A page from the resource

Problem sets

Want more practice?

The harder questions I use with students aiming at the top grades, with solutions that show the decisions rather than only the algebra.

  • 42 questions

    $10

    Top 42 IB Physics Paper 1A MCQs

    Paper 1A style multiple choice questions built around conceptual traps, proportional reasoning, equation selection and interpretation rather than recall.

  • 27 problems

    $15

    Top 27 IB Physics Paper 2 Problems

    Twenty-seven extended problems that connect topics, ask for multi-step reasoning, calculation, interpretation and written physics. Quality over quantity.

What Students Say

Real feedback from students I’ve worked with.

Adarsh Kumar

Deepak Sir played a crucial role in my success in the AP Physics C: Mechanics course. His clear and patient explanations made even the most complex topics understandable. Despite my initial anxiety about tackling an AP level course, Deepak Sir guided me through the entire syllabus efficiently, ensuring that I was well-prepared ahead of time. He not only helped me solve problems step by step but also provided valuable tips on how to approach challenging questions. His support and expertise transformed my fear into confidence, and I was able to perform well in the course thanks to his guidance.

Shreyash Tripathi

I had the pleasure of getting taught IBDP Physics by Deepak Sir from the 2nd year of my DP journey. I really enjoyed his teaching style as not only is it interactive, Sir always made sure to connect specific difficult topics to real words scenarios, which I believe is essential to succeed in DP physics. Deepak Sir’s depth in the knowledge of physics also allowed me to succeed in the Physics Internal Assessment as he made the effort to come up with an idea together and something that interests me with support throughout the writing process. I thoroughly enjoyed getting taught by him and I feel Deepak Sir has the ability to support students taking DP Physics to a very high extent as he did with me.

Lisa D'Souza

Deepak sir has helped me immensely improve my IB physics grade. His lessons are very engaging and always interactive as he poses questions that enable you to think outside of the box . I highly recommend Deepak sir for anyone struggling with IB physics.

Daniel Sylvester

After months of struggling with IB Physics, I decided to get an online tutor and came across Deepak sir. His lessons were very enjoyable and helped me understand challenging concepts. His teaching style was extremely interactive as he was always asking questions and using past paper questions to test my knowledge. All of this offered at an affordable rate made me stick with him for the 2 years of my IB course, which I do not regret.

Biraj Khadka

The classes are engaging, and the teacher always wants you to genuinely understand the concepts. If you have any questions, you can ask them, which also makes doing problems in class more effective, as you get your confusions cleared up in real time. Overall, I would definitely recommend! We also went through many topics before I had actually covered them at school, which helped me understand those units better when we got to them at school because of the head start. He is friendly and nice and builds a good relationship, which makes the classes more enjoyable.

Radhika Raj

Studying with Deepak Sir was an exceptional experience. While it's easy to find information and study concepts online, getting satisfactory answers to follow-up questions and connecting those concepts can be challenging. That's where Deepak Sir excels. Under his guidance, you effortlessly learn more than just the course material, including real-world applications of what you study. He is incredibly approachable; no matter how trivial you think your questions might be, he answers them thoughtfully, creating a comfortable learning experience where curiosity is nurtured. Sir also uses various tools and techniques, such as interactive simulations, that make it easy to visualise concepts. He tailors the learning experience to meet your individual needs, helping you grasp concepts thoroughly and practise them effectively. I highly recommend Deepak Sir to anyone looking to excel in Physics.

Karthik

Deepak sir is an amazing Physics tutor! He explains concepts in such a clear and simple way that even the difficult topics become much easier to understand. What I really appreciate is how patient he is and how he takes the time to explain things properly instead of just rushing through questions. He also provides excellent resources and practice questions that are genuinely useful, especially when preparing for tests and exams. His lessons are always well organised, and I've definitely gained a lot more confidence in Physics because of his teaching. Really grateful for all his effort and support. Would highly recommend him to anyone looking for a great Physics tutor! - Karthik

Prajna

Deepak sir has taught me for 3 years and has been awesome throughout! He can break down complex concepts into understandable, bite sized chunks complete with visualisations and examples. He's engaging and fun to talk to and is really knowledgeable :)

Arnav Rai

Deepak Sir is a brilliant physics tutor. He explains difficult concepts with incredible clarity and makes learning engaging. His guidance and structured approach to problem-solving helped boost both my understanding and my exam confidence. Made a truly huge difference!

Glen Coutinho

Hey Mr Deepak, sorry I couldn't write to you sooner, been swamped with business management. I just wanted to say thank you for the last 2 years. You have been the best physics tutor I could ever have and were always down to do classes even at difficult times. Thank you for always being patient with me, even tho I knew sometimes it could get frustrating. You are hands down the best physics tutor, and all your other students should know they are in safe hands with you. And ofc I still wanna keep in touch with you cuz your just a good person overall. I really wish the best for you and your SAT company.

YouTube

Watch me solve it.

Problem solving, exam strategy and physics explained without the unnecessary nonsense.

Recent lessons

The three latest uploads, straight from the channel.

Portrait of Deepak Kumar, physics educator
Deepak KumarTeaching since 2019

The teacher

Hi, I’m Deepak.

I’ve been teaching physics since 2019, and STUCK IN PHYSICS is my attempt to build the kind of physics learning environment I wish more students had access to.

I teach students to see the physical situation before reaching for an equation. That approach was shaped by years of teaching IB, AP, A Level, WACE and Singapore O Level Physics — and this is where I turn it into lessons, resources and a method you can use when a question is unfamiliar.

Profession
Physicist and physics educator
Education
Integrated Master’s in Physics, NIT Surat
Teaching
Since 2019

Blog

Notes on learning physics

All articles
  • IB Physics HL Paper 2 Analysis: Unit Weightage and Most-Tested Concepts

    Explore IB Physics HL Paper 2 unit weightage and the top 10 most-tested concepts, based on the revised syllabus from the 2025–2026 exam sessions.

    IB Physics · IB Physics HL · IBDP Physics · IB Physics Paper 2 · IB Physics Paper 2 Analysis · IB Physics Topic Weightage · IB Physics Revision · IB Physics Exam Preparation · IB Physics Past Papers · IB Physics 2025–2026 · Most-Tested Physics Concepts

  • Absolute and Percentage Uncertainty

    Learn how to calculate absolute and percentage uncertainty in IB Physics, combine uncertainties, and check experimental agreement with a worked pendulum example.

    AS Physics · A Level Physics · AQA A Level Physics · Cambridge International AS and A Level Physics · Edexcel A Level Physics · OCR A Level Physics · IGCSE Physics · AP Physics 1 · AP Physics 2 · AP Physics C: Mechanics · AP Physics C: Electricity and Magnetism · WACE Physics · Experimental Uncertainty · Measurement Precision · Practical Physics

  • How to Draw Free-Body Diagrams

    A free-body diagram shows the forces acting on one object. Learn what to include, what to leave out and how to turn the diagram into an equation.

    Free-body diagrams · Forces · Newton’s laws · Normal contact force · Friction · Circular motion · Physics problem solving · IBDP · IB Physics · IB Physics SL · IB Physics HL · AP Physics · AP Physics 1 · AP Physics 2 · AP Physics C: Mechanics · AP Physics C: Electricity and Magnetism · AS Physics · A Level Physics · AQA A Level Physics

  • When and How to Use SUVAT Equations

    Learn when to use SUVAT equations, how constant acceleration appears on acceleration-time, velocity-time and displacement-time graphs, and how to choose the correct SUVAT equation for kinematics problems.

    SUVAT · SUVAT equations · kinematics · constant acceleration · motion · physics · IB Physics · A Level Physics · AP Physics

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