AP Physics C Mechanics exam review: format, the 7 units, and how to study

What’s on the AP Physics C Mechanics exam

The exam splits evenly into two sections and runs 3 hours in total.

If you have read that this is a 90-minute exam with 35 multiple-choice questions and 3 free-response questions, that is the old format. College Board updated the multiple-choice count and the timing of both sections, effective with the May 2027 exam. Plenty of guides, and some search results, still carry the superseded numbers.

The four free-response questions

You know the shape of all four before you sit down. Their types are fixed and published in advance.

It is calculus-based, so the questions expect you to differentiate and integrate. A calculator is allowed on both sections — a four-function, scientific or graphing model of your own, or the Desmos calculator built into Bluebook — along with the official equation sheet. Our AP Physics C Mechanics formula sheet shows exactly what you are given. The format is hybrid: the multiple choice runs in Bluebook, while the free response is handwritten.

One thing worth knowing before you plan your year. AP Physics C is two separate exams — this one and AP Physics C: Electricity and Magnetism — sat and scored independently. Many students take both, but taking one does not commit you to the other.

The 7 units of AP Physics C Mechanics

The redesigned course covers seven calculus-based units. Force and translational dynamics is the heaviest, and gravitation and orbits are folded into the dynamics and energy units rather than standing alone. The ranges below are College Board’s own published weightings, and they describe the multiple-choice section rather than the whole paper.

How AP Physics C Mechanics is scored

Your multiple-choice and free-response points combine into one composite score, which College Board scales to a 1–5 each year. In 2026, 72% of students scored a 3 or higher and 20% earned a 5.

That 5 rate has fallen three years running — 28.5% in 2024, 21.7% in 2025, 20% in 2026, with the mean slipping from 3.50 to 3.30. The decline runs alongside the exam’s redesign, though College Board has not attributed it to any single cause. The pass rate is still above the AP average, but that partly reflects a small, well-prepared cohort, so do not mistake it for an easy exam.

On the free response, partial credit is real: setup, notation and justification each earn points on their own. To see what a practice raw score turns into, run it through our AP Physics C Mechanics calculator.

How to study for AP Physics C Mechanics

Command the calculus first. Because the equation sheet is provided, points come from setting up the right derivative or integral and justifying it — not from recall. Practice deriving results rather than memorizing them, and get comfortable switching between an energy approach and a force approach.

Then put most of your reps into the free response, since it is half the exam. Practise the four types by name: one question will be experimental design and analysis, which asks you to plan or critique a procedure and handle data rather than solve for a number, and it is the one students prepare for least. Drill past questions against the rubric with our AP Physics C Mechanics FRQ guide, and keep the equation sheet open so the symbols and setups feel automatic.

When the exam is held, and how long it takes

AP Physics C Mechanics is given once a year during College Board’s May testing window, and the exam takes 3 hours. The next administration is Monday, 3 May 2027, in Session 1. Start times are set by your school, so confirm the schedule with your AP coordinator before you plan around it.