How to Choose Between AP Physics 1 and AP Physics 2 in 2026

AP Physics 1 and AP Physics 2 are two separate, algebra-based courses — not two halves of one course you must take in order. The short answer: take AP Physics 1 first if you are new to physics, because it builds the mechanics foundation that Physics 2 assumes. Choose AP Physics 2 only after you have completed a first mechanics course (either AP Physics 1 or AP Physics C: Mechanics), since it jumps straight into electricity, magnetism, fluids, optics, and thermodynamics. If you are choosing right now and have not taken any physics, the decision is easy: start with Physics 1.

What Each Course Actually Covers

Both courses are offered by the College Board as part of its Advanced Placement program, and both use algebra and trigonometry — no calculus is required or expected (College Board).

AP Physics 1 is an introductory, college-level mechanics course. It covers kinematics, Newton’s laws, work and energy, momentum, rotation, oscillation, and selected fluid topics such as density, pressure, buoyancy, and flow. A prior high school physics course is not required; the College Board recommends students be concurrently enrolled in Algebra 2.

AP Physics 2 picks up where a first mechanics course leaves off. It surveys electromagnetism (electrostatics, capacitors, simple circuits, magnetism, induction) plus thermodynamics, waves, sound, optics, and modern physics.

Notice the asymmetry: Physics 1 is a deep dive into one broad area, while Physics 2 is a survey across several. They feel different to study, and students who liked the problem-solving rhythm of mechanics sometimes find the second course more memorization-heavy — and vice versa.

The Overlap You Should Know About

If your school offers AP Physics C, the comparison shifts slightly. AP Physics 1 covers mechanics without calculus but includes fluids; AP Physics C: Mechanics covers similar mechanics with calculus instead of fluids. Similarly, AP Physics 2 covers electromagnetism without calculus plus thermodynamics, optics, and modern physics, while AP Physics C: E&M covers electromagnetism with calculus, adding topics like electric flux, inductance, RL and LC circuits, and Maxwell’s equations (Wikipedia).

In other words, Physics 2 and Physics C: E&M are siblings, not the same course. Both start from the assumption that you already know mechanics.

The Prerequisite Question

The single most important factor is what you have already taken. Here is the clean logic:

• No prior physics → AP Physics 1. It is designed to be introductory, and it is where the mechanics foundation gets built.
• Completed AP Physics 1 or AP Physics C: Mechanics → AP Physics 2 is the natural next step.
• Completed AP Physics C: Mechanics but want a lighter math load → AP Physics 2 still works, since it assumes mechanics but not calculus.

What you should not do is enroll in Physics 2 as your first physics course. Every unit in it — circuits, fields, optics — leans on energy, force, and charge reasoning that Physics 1 teaches. Skipping that step usually means spending the year patching gaps instead of learning new material.

Also check your school’s own policy. Many high schools gate Physics 2 behind Physics 1 or an equivalent, and some require teacher approval. That requirement exists for a reason.

Exam Structure and How You Are Scored

Both exams use the same format: multiple-choice questions plus free-response questions, and both are entirely conceptual and algebra-based. Neither includes calculus-based problems (Wikipedia).

The practical differences:

• Content weighting. Physics 1 concentrates its exam weight on mechanics units; Physics 2 spreads weight across electromagnetism, thermodynamics, waves, optics, and modern physics.
• Math style. Physics 1 tends toward multi-step quantitative problems. Physics 2 involves more proportional reasoning, graph interpretation, and qualitative explanation mixed with algebra.
• Score calibration. Both are scored 1–5, and colleges set their own credit and placement policies. A score of 3 or higher is widely considered “qualified,” but competitive engineering programs often want a 4 or 5, and some want Physics C instead.

A quick worked example of how the courses differ in flavor. A Physics 1 free-response might ask you to derive the speed of a block at the bottom of a ramp using energy conservation, then explain what changes if friction is added. A Physics 2 free-response might show you a circuit with two resistors and a capacitor and ask how the brightness of a bulb changes over time after the switch closes, then have you justify it with potential difference reasoning. Same subject family, different muscle.

Which One Should You Take This Year?

Work through this decision in order:

1. Have you taken any physics course? If no, choose Physics 1.
2. Have you taken mechanics already? If yes, Physics 2 is available to you.
3. What does your intended major require? Engineering and physical science programs frequently prefer or require AP Physics C rather than either algebra-based course.
4. What is your math level? If you are taking or have taken calculus and are comfortable with it, Physics C may serve you better than Physics 2. If you are in Algebra 2 or precalculus, Physics 1 is the right math fit.
5. What does your schedule allow? Physics 1 and Physics 2 are separate year-long courses. Taking both in the same year is unusual and the pacing is brutal.

One more consideration: some students take Physics 1 in junior year and Physics 2 in senior year. That sequencing works well and gives you two AP scores in physics, which is a reasonable signal for many non-engineering majors. If you are aiming at engineering, though, consider switching to the C sequence once you have calculus.

A Note on Self-Study

If your school does not offer one of the courses, self-studying Physics 1 is far more feasible than self-studying Physics 2. Physics 1 has abundant free resources — Khan Academy’s AP Physics 1 material is aligned to the course and covers the full mechanics sequence (Khan Academy). Physics 2’s breadth makes it harder to self-teach, because you need solid coverage of five distinct topic areas rather than one deep area.

Common Mistakes to Avoid

• Taking Physics 2 first because it “sounds more advanced.” It is more advanced in sequence, not in difficulty. Skipping the foundation hurts you.
• Assuming both courses are interchangeable for college credit. Check each school’s policy individually; some grant credit for one but not the other, and many grant none for algebra-based physics in engineering programs.
• Choosing based on the exam date or perceived difficulty. The better question is whether you have the prerequisite background, not which exam has a friendlier reputation.
• Ignoring the math track. Physics 1 pairs naturally with Algebra 2; Physics C pairs with calculus. Choosing against your math level creates unnecessary friction.

If you are unsure, talk to your physics teacher and your school counselor, and look up the specific credit policies at two or three colleges you are actually considering. Their answers will narrow the choice faster than any general advice.

Key Takeaways

• AP Physics 1 is the starting point. It is an introductory, algebra-based mechanics course that requires no prior physics.
• AP Physics 2 is the sequel. It assumes a first mechanics course and covers electromagnetism, thermodynamics, waves, optics, and modern physics.
• Take them in order unless you have already completed a mechanics course through AP Physics C.
• Both exams are algebra-based and share the same multiple-choice plus free-response format; neither includes calculus.
• Math level drives the choice: Algebra 2 points to Physics 1; calculus points toward the Physics C sequence.
• College credit varies by school. Verify policies at your target colleges rather than assuming either course will count.
• When in doubt, ask your teacher and counselor — and self-study Physics 1 before attempting Physics 2 alone.