The site is designed to work differently depending on where you are in your learning. Here's how to get the most out of it in each situation.

If you're learning a unit for the first time

Start with the lesson. Each one begins with a real-world hook and builds the concepts intuitively before introducing any formulas. Read it carefully, work through the embedded worked examples as you go, and don't skip past anything that doesn't quite click.

Once the lesson makes sense, open Worksheet A — Foundation. These are 10 problems scaffolded from simple to moderate, designed to let you practice the concepts without the stress of AP-exam pacing. Try each problem before looking at the solution. The point is to notice where you got stuck, not to minimize mistakes.

Finish with the common mistakes guide. It names the specific errors students make on this unit, shows the wrong approach alongside the right one, and explains why the wrong approach feels tempting. Reading this before you take a class test can save real points.

If you're reviewing for a unit test

Open the one-page study guide first. It's a condensed version of everything that matters in the unit, designed to be printed and used the night before an exam. If anything on it feels unfamiliar, jump back to the lesson section for that topic.

Then work through Worksheet B — AP Exam Style. These problems match the format and difficulty of real AP exam questions, including multiple choice and free-response items. Time yourself if the test is close.

For the hardest topics, finish with the tutor's corner at the bottom of the unit. It covers what separates students who get a 4 from students who get a 5 on that specific unit — the subtle distinctions that teachers often don't have time to emphasize.

If you're stuck on a specific problem

Go directly to the unit's worked solutions. Every problem on every worksheet has a complete, step-by-step solution with reasoning explained at each step, plus a "key insight" note and a "common error" note. Don't just read the final answer; read how the problem was approached, because that transfers to other problems. Approach and reasoning transfer; final answers don't.

If a worked solution isn't enough, use the feedback form to flag what's unclear. I'll either explain it directly or rewrite that section of the site.

If you're preparing for the full AP Physics 1 exam

Work through all eight units in order, since each unit builds on the previous one. Spend extra time on Units 1, 2, and 4 (kinematics, forces, and momentum), which account for the largest share of exam questions and underpin almost everything else. For free-response practice, focus on Worksheet B in each unit — the problems there are modeled on the 2025 AP exam and are the closest match to what you'll see on test day.

Also work through Lesson 0: Vectors before the exam, even if you think you know it. Weak vector math is the single most common reason students lose points on problems they otherwise understand.

This site is built specifically for students taking AP Physics 1. The content aligns with the current College Board Course and Exam Description, and the free-response problems match the format and difficulty of real AP exam questions.

It also works well for students in honors physics and other algebra-based introductory mechanics courses, since the material overlaps almost entirely. If your class covers kinematics, Newton's laws, energy, momentum, rotational motion, and fluids, this site will serve you.

It is not the right resource for:

• AP Physics C or any calculus-based physics course. The content covers algebra-based mechanics only.
• College physics at a research university level. The depth is high-school AP, not college.
• Physics for the SAT subject test (now discontinued) or standardized tests other than AP.

If you're not sure whether this fits your course, open any unit's lesson section and read the first page. If the pacing and level match what your class is covering, you're in the right place.

The fastest way to reach me is through the feedback form, which goes straight to my email. I read everything: corrections to the site, questions about a specific problem, requests for topics I should cover differently, or just notes from anyone using this for their own studying.

You can also email me directly at fpphysicshelp@gmail.com. I usually reply within a few days.

If something on this site helped you understand a concept, or if a worked solution clicked when nothing else did, I'd love to hear about it. Knowing the site reaches actual students using it for actual exams is the entire reason I built it.