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Meet Prof Phy — Your Go To AI Physics and Math Tutor

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Jason Kuma

Writer | Coach | Builder | Fremont, CA

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Professor Phy is AI based Physics assistant that adapts to your learning style. It aims to accelerate your learning journey.

Prof Phy is the world’s most advanced and accurate math and physics helper. Watch the Phy demo below or keep reading to see how Phy compares to GPT 3.5.

Chat GPT 3.5 vs Phy v8

While Chat GPT 3.5 is excellent for general questions, Phy excels in answering Physics and math questions.

Additionally, Phy adapts to your learning style over time, can analyze handwriting in images, and is fully integrated in UBQ to accelerate your learning pace.

FeaturePhy v8GPT 3.5
CostFree Tier; Paid Tier Free
CapabilityFined Tuned for Physics and Math.Generalized help.
PreformaceAccuracy of answers > 80%Accuracy of answers > 65%
GraphingDiagrams and Graphing (Coming Soon)None
AdaptabilityAdapts to your learning style.None
Chat HistoryNo need create “new chats.” Phy remembers everything you give it.Start a new chat or continue in the same chat.
Image RecognitionYes. Can analyze your written responses, diagrams etc.None
Audio Phy voice (coming soon).Voice Input and Output
Speed15-30 seconds per completed responses.20-45 seconds per completed response.
Ecosystem LearningKeeps you on track (daily personalized emails sent to your inbox from Phy coming soon) + daily action plans and suggested problems.None.
Comparison of Nerd Notes’ Phy v5 and Chat GPT 3.5

Phy’s Expertise: A Trio of Question Types and More

When it comes to UBQ, Phy specializes in assisting with three types of questions :

  • Multiple Choice Questions (MCQ)
  • Free Response Questions (FRQ)
  • General Questions (GQ)

You can find over 1000+ of these questions on UBQ.

AND if you need to give Phy your own questions, please use the general Phy interface here. You can upload images or type out your question.

This AI Physics tutor can truly do it all.

Interactive Learning with Phy

Phy understands your questions and responses, even the implicit ones.

For instance, if your answer is 2\pi \sqrt{4x^2} , simply input it as “2 pi times root 4x squared” and it will know what your mean.

Phy’s intuitive understanding enhances the interaction beyond typical AI tutors.

Phy also tracks your progress so that way it can give you personalized recommendations on how and what to study for your upcoming exam.

It’s truly your personal AI Physics Tutor.


You can upload pictures for Phy to analyze.

And yes, Phy can understand your handwriting, grade your homework. This is ideal for questions that involve a lot of equations and variables that can’t be easily typed out.

Phy Pro users can upload unlimited images and can take pictures directly from a phone.

Processing time takes ~15 seconds. The bigger the image size the longer Phy takes to analyze it. Crop the photo before hand for even faster analysis.

Smart Actions

Smart actions is a helpful new tool introduced in Version 7.1.

After Phy generates a response it will follow up with 7-10 different smart actions, including:

  1. New-Question – Tells Phy that you are ready to move on to the next questions (also speeds up response times by 40%).
  2. Simplify – Condenses the working.
  3. Expand – Explains further and in more detail.
  4. Analogize – Explains using a analogy. Helpful for understanding complex concepts.
  5. Example – Gives an example of the concept at hand
  6. Answer – Quickly evaluates the working if Phy hasn’t already done so.
  7. Generate – Create similar practice questions based of the most recent one solved or topic at hand.

After Phy responds feel free to select your smart action of choice. Before clicking “send” you can also add more images and or add something to the chat box.

In-Depth Free Response Question Support

To work on an FRQ, choose one from our Ultimate Bank of Questions (UBQ), solve it, and input your answer.

Don’t feel like typing answers? Simply upload a screenshot or image of your working directly into the chat box! Phy will intelligently read your hand writing and evaluate your responses.

Your FRQ responses are evaluated based on:

  • Standard FRQ guidelines and practices
  • Correctness as verified by Nerd-Notes
  • Overall accuracy

Got a question incorrect? Phy will provide detailed feedback based on your response to help you understand and improve on your mistakes.

Guidance on MCQs and GQs

Unlike FRQs, MCQs and GQs are more about understanding concepts than grading.

Phy can clarify, guide, and engage in problem-solving discussions for these types of questions. Feel free to ask Phy anything, like:

  • Clarifications on the answers
  • Step by step problem-solving guidance
  • Simple explanations of complex concepts
  • Alternate problem-solving methods
  • Simplified explanations of answers

For example, ask Phy:

“Please clarify step 4 of the explanation, and why the answer is (a) rather than (c). And also explain how x affects y.”

Phy’s Response Time

Phy’s response times can vary from 10 to 30 seconds.

The complexity and length of your question will affect the times. Pictures usually take a little longer to process.

Bear with Phy as it learns and improves!

The Future of Phy: Faster, More Interactive, and Feature-Rich

UPDATE April 2024 – Due to a high volume of messaging being sent (almost 1k/day) I’ve restricted the free tier down to 20 messages.

Phy is currently free for all students, with all costs taken care of by We’re actively working to enhance Phy’s response times and introduce new features, including:

  • Chat history and notes
  • Progress emails from Phy
  • Grade tracking and student analytics
  • Global stats and leaderboards
  • Phy for Educators

Stay tuned for these exciting updates.

You can also learn more about Phy here.

Picture of Jason Kuma
Jason Kuma

Writer | Coach | Builder | Fremont, CA


Units in AP Physics 1

Unit 1 – Linear Kinematics

Unit 2 – Linear Forces

Unit 3 – Circular Motion

Unit 4 – Energy 

Unit 5 – Momentum 

Unit 6 – Torque 

Unit 7 – Oscillations 

Unit 8 – Fluids

Reading Key


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Made By
\Delta x = v_i t + \frac{1}{2} at^2F = ma
v = v_i + atF_g = \frac{G m_1m_2}{r^2}
a = \frac{\Delta v}{\Delta t}f = \mu N
R = \frac{v_i^2 \sin(2\theta)}{g} 
Circular MotionEnergy
F_c = \frac{mv^2}{r}KE = \frac{1}{2} mv^2
a_c = \frac{v^2}{r}PE = mgh
 KE_i + PE_i = KE_f + PE_f
MomentumTorque and Rotations
p = m v\tau = r \cdot F \cdot \sin(\theta)
J = \Delta pI = \sum mr^2
p_i = p_fL = I \cdot \omega
Simple Harmonic Motion
F = -k x
T = 2\pi \sqrt{\frac{l}{g}}
T = 2\pi \sqrt{\frac{m}{k}}
gAcceleration due to gravity, typically 9.8 , \text{m/s}^2 on Earth’s surface
GUniversal Gravitational Constant, 6.674 \times 10^{-11} , \text{N} \cdot \text{m}^2/\text{kg}^2
\mu_k and \mu_sCoefficients of kinetic (\mu_k) and static (\mu_s) friction, dimensionless. Static friction (\mu_s) is usually greater than kinetic friction (\mu_k) as it resists the start of motion.
kSpring constant, in \text{N/m}
M_E = 5.972 \times 10^{24} , \text{kg} Mass of the Earth
M_M = 7.348 \times 10^{22} , \text{kg} Mass of the Moon
M_M = 1.989 \times 10^{30} , \text{kg} Mass of the Sun
VariableSI Unit
s (Displacement)\text{meters (m)}
v (Velocity)\text{meters per second (m/s)}
a (Acceleration)\text{meters per second squared (m/s}^2\text{)}
t (Time)\text{seconds (s)}
m (Mass)\text{kilograms (kg)}
VariableDerived SI Unit
F (Force)\text{newtons (N)}
E, PE, KE (Energy, Potential Energy, Kinetic Energy)\text{joules (J)}
P (Power)\text{watts (W)}
p (Momentum)\text{kilogram meters per second (kgm/s)}
\omega (Angular Velocity)\text{radians per second (rad/s)}
\tau (Torque)\text{newton meters (Nm)}
I (Moment of Inertia)\text{kilogram meter squared (kgm}^2\text{)}
f (Frequency)\text{hertz (Hz)}

General Metric Conversion Chart

Example of using unit analysis: Convert 5 kilometers to millimeters. 

  1. Start with the given measurement: \text{5 km}

  2. Use the conversion factors for kilometers to meters and meters to millimeters: \text{5 km} \times \frac{10^3 \, \text{m}}{1 \, \text{km}} \times \frac{10^3 \, \text{mm}}{1 \, \text{m}}

  3. Perform the multiplication: \text{5 km} \times \frac{10^3 \, \text{m}}{1 \, \text{km}} \times \frac{10^3 \, \text{mm}}{1 \, \text{m}} = 5 \times 10^3 \times 10^3 \, \text{mm}

  4. Simplify to get the final answer: \boxed{5 \times 10^6 \, \text{mm}}



Power of Ten




















(Base unit)


Deca- or Deka-


















  1. Some answers may be slightly off by 1% depending on rounding, etc.
  2. Answers will use different values of gravity. Some answers use 9.81 m/s2, and other 10 m/s2 for calculations.
  3. Variables are sometimes written differently from class to class. For example, sometime initial velocity v_i is written as u ; sometimes \Delta x is written as s .
  4. Bookmark questions that you can’t solve so you can come back to them later. 
  5. Always get help if you can’t figure out a problem. The sooner you can get it cleared up the better chances of you not getting it wrong on a test!

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Find 1000+ challenging AP Physics 1 problems to prep for your next exam.

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