Start with the equation, check the answer, then drill the first topic that feels shaky.
Physics isn't rocket science.
I'm Coach Elon — your physics tutor, built around your class. Show me what's got you stuck and I'll teach you through it, not just hand you the answer.
Today’s Daily Question
No penalty. Try it, check the reasoning, then move on.
Frictionless ramp components
Open one explanation, then practice one similar question.
Mastery Studio
Flashcards, learn mode, quick checks, and recommended-topic routing for the current test.
Study Hub
Plain-English formulas, symbol decoder, worked examples, topic map, and self-check quizzes.
Games · KKG
Answer physics, earn Kat Kash, and get more like-this practice after a question.
Coach Elon
Ask a question, OCR a worksheet photo, get a hint, or ask for the same answer another way.
Answer Precision
Sig figs, scientific notation, guard digits, units, and what to type in Canvas.
Frictionless ramp components
This ramp setup is a common sticking point. The goal is to make the weight split finally feel obvious.
Energy
Compare before and after. If nonconservative work is zero, total mechanical energy stays balanced.
Paste the problem. Find the equation before doing math.
This catches the usual Test 2 trap: using a formula before naming the family, unknown, and hidden first step.
Fast rule
Family first, unknown second, givens third. If the equation needs a value you were not given, do that hidden step first.
Learn the idea, then check one answer.
Start with the guide, use the Equation Finder before math, then do one focused check so the setup feels clear.
Open today’s planToday's Daily Question
No penalty. Answer one current Test 2 question and keep the same Kat Kash streak used in Games.
Open GamesNet force decides acceleration
Balanced forces mean zero acceleration. Unbalanced net force means acceleration in the net-force direction.