AP Physics 1 review: exam format, the 8 units, and how to study
The AP Physics 1 exam is 3 hours long: 50 multiple-choice questions in the digital Bluebook app and 5 handwritten free-response questions. This guide walks through that format, all eight units (including the new Fluids unit), how the exam is scored, and a study plan built to earn a 5.
What’s on the AP Physics 1 exam
The AP Physics 1 exam runs 3 hours and splits evenly into two sections. Section I is 50 multiple-choice questions taken on a computer or tablet in the College Board’s Bluebook app, with 90 minutes to work through them, and it counts for half of your score. Section II is 5 free-response questions you write out by hand on paper the proctor provides, again in 90 minutes, for the other half.
A four-function, scientific, or graphing calculator is allowed on the entire exam, and the official equation sheet is built into Bluebook and printed for the free-response booklet, so you are never asked to recall a formula from memory. What the exam does ask is that you reason through unfamiliar situations and explain your thinking in words, which is why memorizing equations alone is not enough. Our AP Physics 1 equation sheet lists exactly what you get on test day.
The 8 units of AP Physics 1
AP Physics 1 is algebra-based and covers roughly the first semester of college physics across eight units. The 2024–25 redesign added Fluids as a full eighth unit, so older guides that show seven units are out of date.
How AP Physics 1 is scored
Your 50 multiple-choice answers and your 5 free-response questions are combined into a single raw composite score, which the College Board converts to the familiar 1–5 scale each year. The cutoffs move slightly from year to year because they are set after the exam, so a 5 is not a fixed percentage.
AP Physics 1 has historically been one of the lower-scoring AP exams, with only a small share of students earning a 5, so a strong free-response section matters. To see what a given raw score turns into, run the numbers through our AP Physics 1 score calculator.
How to study for AP Physics 1
Start by learning the reasoning behind each relationship rather than the symbols. Because the equation sheet is provided, points come from knowing when a formula applies and being able to justify it, not from recall.
Practice the free-response section out loud and on paper, since explaining your steps in writing is exactly what the graders reward. Work old free-response questions under a timer, then check your structure against our AP Physics 1 FRQ guide. Drill one unit at a time using the Progress Check walkthroughs, and keep our cheat sheet next to you for fast review in the final week.
When is the AP Physics 1 exam, and how long is it
AP Physics 1 is given once a year during the College Board’s May testing window, usually in early to mid May, and the exam itself takes 3 hours. Because the College Board sets the exact date and start time each year, confirm the current-year schedule on the official AP calendar with your AP coordinator before you plan around it.
Frequently asked questions
Quick answers, written by humans.
How many questions are on the AP Physics 1 exam?
There are 55 questions total: 50 multiple-choice questions in the Bluebook app and 5 handwritten free-response questions, split into two 90-minute sections.
How long is the AP Physics 1 exam?
Three hours — 90 minutes for the multiple-choice section and 90 minutes for the free-response section, with the two weighted equally.
Is the AP Physics 1 exam digital?
The multiple-choice section is digital in the Bluebook app, while the free-response section is still written by hand on paper the proctor provides.
How many units are on AP Physics 1?
Eight, after the redesign added Fluids: kinematics, forces, energy, momentum, torque and rotation, energy and momentum of rotating systems, oscillations, and fluids.
Is a calculator allowed on AP Physics 1?
Yes. A four-function, scientific, or graphing calculator is allowed on both sections, and the official equation sheet is provided.
Is AP Physics 1 hard?
It is considered one of the tougher AP exams because it tests reasoning and written explanation rather than recall. Our honest difficulty breakdown goes deeper.