Mastering the Rules of the Universe
Like Duolingo, but for Mastering the Rules of the Universe. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free forever · No credit card · iPhone & Android

Key ideas in Mastering the Rules of the Universe
- Speed is calculated by dividing distance by time
- Velocity requires both a speed and a specific direction
- The resulting unit combines the distance and time units (m/s)
- Changing direction changes velocity even if speed stays constant
- Calculating speed from distance and time
- The difference between speed and velocity regarding direction
- Time is calculated by dividing distance by speed
- The speed ratio predicts how much time is needed for a specific distance
- Speed units are always distance units over time units
- Changing the unit changes the numerical value but represents the same physical pace
- Average speed is total distance divided by total time
- Objects moving at the same rate in different directions have different velocities
- Predicting trip duration using the speed formula
- Individual speeds for segments must be combined into totals first
- Objects moving in a circle at a constant rate have changing velocities
- Calculating average speed for a multi-leg journey
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Mastering the Rules of the Universe the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If a little snail crawls 10 inches in 2 minutes, how do we figure out how fast he's going?
Get it right to open this lesson and 174 more in the app.
Where Mastering the Rules of the Universe takes you
Stop memorizing random letters and start seeing the invisible patterns that move the world. Learn how to predict the future using the simple math behind speed, force, and energy.
- 1
Predicting Where Things Land
- Calculating how fast you are going
- The math of speeding up and slowing down
- Finding the exact spot an object will stop
- How gravity changes a falling object's speed
- 2
Winning the Tug-of-War
- How much push you need to move something
- The secret to why heavy things are harder to stop
- Calculating the invisible grip of friction
- What happens when two objects collide
- The math of leaning into a turn
- Why you don't fly off a merry-go-round
- 3
Getting Work Done with Less Effort
- Measuring the energy of a moving car
- How height stores hidden energy
- Calculating the 'Work' you actually did
- 4
The Power of Pressure and Flow
- Why high heels sink but sneakers don't
- How ships stay afloat using math
- Predicting how water moves through a pipe
- The formula for air lifting an airplane wing
- How temperature changes the pressure in a tire
- 5
Controlling the Flow of Electricity
- The simple relationship between volts and amps
- Calculating the cost of leaving your lights on
- What happens when you add more bulbs to a wire
- How magnets can create a current
- 6
Seeing and Hearing the World
- Measuring the speed of a sound wave
- Why a siren changes pitch as it passes you
- Predicting where a mirror will show an image
- How light bends when it hits water
- Calculating the colors of a rainbow
- 7
The Heat and Cold Connection
- How much energy it takes to boil water
- Why metal feels colder than wood
- The math of things expanding when they get hot
- 8
The Deep Logic Underneath
- Why units of measurement are like a language
- How to turn any formula into a graph
- The history of the world's most famous equations
- Constants: The numbers that never change
- When the standard formulas start to break
8 sections · 35 units · 175 levels. Built to play, not to enroll.
You pick the voice
Mastering the Rules of the Universe is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Science on Tomo
The Mechanics of the Cosmos
Master the mathematical laws and physical principles that govern everything from the motion of planets to the quantum behavior of starlight.
Biology in Your Daily Life
Discover how the invisible machinery of life explains everything from why you get hungry to how your body fights off a cold.
The Biology of Attraction
Discover the hidden chemical and neurological forces that drive human connection, from the first spark of a glance to the deep bonds of long-term partnership.
Quantum Physics in the Real World
Discover how the strange rules of the subatomic world power your smartphone, secure your bank account, and define the future of technology.
Hydrology and Water Dynamics
Discover how water shapes our world, from the hidden movement of underground aquifers to the powerful dynamics of river systems. Learn to read the landscape and understand the complex cycle that sustains life on Earth.
Quantum Physics: The World of Probability
Step into the strange reality of the very small, where objects can be in two places at once and the act of looking changes the world.
Start Mastering the Rules of the Universe today.
Download Tomo, search Mastering the Rules of the Universe, and play your first lesson in under a minute.