AP Physics 1 and AP Physics 2: Complete 2025 Guide
If you are deciding between the two algebra-based Advanced Placement physics courses, the short answer is this: AP Physics 1 covers introductory mechanics (plus a little fluids), while AP Physics 2 picks up the second half of a college physics sequence — electricity and magnetism, thermodynamics, waves, optics, and modern physics. Together, AP Physics 1 and AP Physics 2 form a two-year, non-calculus sequence that the College Board designed as a full survey of introductory college physics. You can take them in either order in principle, but Physics 1 is almost always taken first because Physics 2 assumes you already know mechanics.
Both courses are algebra-based, meaning no calculus is required — though strong algebra and trigonometry skills absolutely are. Here is what each course covers, how the exams are structured, and how to decide whether this path or the calculus-based AP Physics C route fits you better.
What Each Course Covers
AP Physics 1: Mechanics and Fluids
Physics 1 is built around Newtonian mechanics. The core units cover kinematics (describing motion), forces and Newton’s laws, work and energy, momentum, rotation, and simple harmonic motion such as springs and pendulums. It also includes selected fluid topics — density, pressure, buoyancy, and flow — which is one place it diverges from AP Physics C: Mechanics.
The math stays algebraic. You will solve quadratic equations, work with trigonometric components of vectors, and interpret graphs constantly. The College Board recommends students be concurrently enrolled in Algebra 2; a prior high school physics course is neither required nor expected, since the course is designed as an introduction.
AP Physics 2: E&M, Thermo, Waves, Optics, Modern
Physics 2 is a survey of the second half of introductory college physics. Its centerpiece is electromagnetism: electrostatics, capacitors, simple DC circuits, magnetism, and electromagnetic induction. On top of that, it covers thermodynamics, waves and sound, geometric and physical optics, and modern physics topics such as atomic structure and nuclear physics.
Like Physics 1, it is strictly algebra-based. Where AP Physics C: Electricity and Magnetism uses calculus for electric flux, inductance, RL and LC circuits, and the Biot–Savart law, Physics 2 handles the same conceptual territory without calculus and adds the thermo, optics, and modern physics material that Physics C leaves out.
How the Two Courses Fit Together
The natural sequence is Physics 1 in one year, Physics 2 the next. Physics 2 assumes fluency with forces, energy, and circuits-adjacent reasoning that you build in Physics 1, so jumping straight into Physics 2 without mechanics is possible but harder than it needs to be.
The two courses together map closely onto a standard two-semester college physics sequence for life science and pre-medical students. That is not an accident: the older AP Physics B course, which these two replaced, served exactly that population. Compared with the AP Physics C courses, this pair is broader but shallower mathematically — you trade calculus depth for a wider range of topics.
One practical note: the AP Physics C courses are recognized for credit by more universities than Physics 1 and 2, particularly for engineering and physical science majors. If your target schools and intended major demand calculus-based credit, plan accordingly.
Exam Format and Scoring
Both exams follow the same multiple-choice and free-response structure, and the questions themselves are conceptual or algebra-based, never calculus-based. You will typically see a mix of qualitative reasoning, experimental design, and quantitative multi-step problems.
| Feature | AP Physics 1 | AP Physics 2 |
|---|---|---|
| Math level | Algebra and trig | Algebra and trig |
| Core topics | Mechanics, rotation, oscillations, fluids | E&M, thermo, waves, optics, modern physics |
| Prerequisite | Algebra 2 (concurrent) | Physics 1 or equivalent mechanics |
| Exam structure | Same MC and FRQ format as Physics 2 | Same MC and FRQ format as Physics 1 |
Scores run from 1 to 5, and many colleges award credit or placement for a 4 or 5. Because unit weightings on the exams shift slightly from year to year, check the current course and exam description on AP Students rather than relying on older prep books.
A Short Worked Example
Suppose a 2.0 kg block slides down a frictionless ramp inclined at 30° and you want its acceleration. The component of gravity along the ramp is g sin θ, so:
a = (9.8 m/s²)(sin 30°) = (9.8)(0.5) = 4.9 m/s²
Notice what this problem does and does not need. It uses a free-body diagram, vector components, and Newton’s second law — all Physics 1 skills, all algebraic. Physics 2 problems look different: for example, finding the equivalent resistance of two resistors in parallel using 1/R_eq = 1/R₁ + 1/R₂, then applying Ohm’s law to find current. Same mathematical toolkit, different physics.
Which Path Should You Take?
Choose Physics 1 and 2 if you want a broad, algebra-based survey — especially if you are heading toward life sciences, pre-med, or a non-engineering major, or if you have not yet taken calculus. Choose the AP Physics C sequence (Mechanics, then E&M) if you are comfortable with or concurrently taking calculus and your intended major or colleges expect calculus-based physics.
A few decision points worth weighing:
- Your math readiness. If calculus is not on your schedule, the algebra-based pair is the right fit.
- Your target colleges. Check credit policies directly — they vary widely between the C and 1/2 sequences.
- Your timeline. Two years is the standard pace for Physics 1 and 2. Compressing both into one year is possible but demanding.
- Your interests. If optics, thermodynamics, and modern physics sound appealing, Physics 2 covers them; Physics C does not.
The American Physical Society and your school counselor can help you map these courses onto realistic college plans.
How to Prepare Well
Success in both courses comes down to a handful of habits, not tricks.
- Practice free-response questions under time. The FRQs reward clear setup, labeled diagrams, and explicit reasoning — graders look for justified answers, not just final numbers.
- Build conceptual fluency. Both exams lean heavily on qualitative questions. Being able to explain why a quantity changes matters as much as computing it.
- Treat labs seriously. Experimental design and data analysis appear on the exams, and hands-on experience makes abstract topics like induction or buoyancy concrete.
- Use the official course descriptions. They list exactly which topics and skills are testable, which keeps your studying targeted.
If you are considering a health-science path, note that course credit and major requirements vary by institution — confirm specifics with your college or a school counselor before finalizing your schedule.
Key Takeaways
- AP Physics 1 covers algebra-based mechanics plus fluids; AP Physics 2 covers electricity and magnetism, thermodynamics, waves, optics, and modern physics.
- Neither course requires calculus, but both demand solid algebra and trigonometry — the College Board recommends concurrent Algebra 2 for Physics 1.
- Take Physics 1 before Physics 2; the second course assumes mechanics fluency.
- The AP Physics C courses are more widely recognized for college credit, especially for engineering and physical science majors.
- Confirm current exam weightings, credit policies, and major requirements with the official course description and your target colleges before committing.
