What's the difference between AP Physics 1 and AP Physics C: Mechanics?

They cover overlapping mechanics content, but Physics 1 is algebra-based and spends more time on conceptual reasoning, experimental design, and written argumentation. Physics C: Mechanics uses derivatives and integrals and moves faster through the same topics. Physics 1 also includes fluids, which Physics C does not.

Does AP Physics 1 still include waves, sound, and circuits?

No. Following the course revision, waves, sound, and simple electric circuits moved out of Physics 1, and fluids moved in. If you are working from an older review book, the wave and circuit chapters are no longer part of this course.

Why do I understand the concepts but still lose marks on free response?

Most lost points come from unstated assumptions: not defining the system, not justifying why a quantity is conserved, or jumping to a formula without saying which principle it comes from. Practising the explanation out loud before writing it tends to surface those gaps quickly, which is what voice sessions are set up for.

Can this help with the lab and experimental design questions?

Yes. Sessions can work through choosing what to measure, deciding which variables to plot so that a straight-line fit gives you the quantity you want, and explaining how a specific source of error would shift the result in a stated direction.

AP Physics 1

AP / IB · Science

AP Physics 1 is algebra-based mechanics, and the exam rewards reasoning about systems more than plugging into formulas. This tutoring covers the full course sequence — kinematics, forces and translational dynamics, work/energy/power, linear momentum, torque and rotational dynamics, energy and momentum of rotating systems, oscillations, and fluids — with an emphasis on the two things students lose the most points on: drawing correct free-body diagrams and writing paragraph-length reasoning that connects a physical principle to a specific claim. Sessions are spoken, so you explain your setup out loud before touching algebra, which is exactly what the free-response questions ask you to do in writing.

Start a session on AP Physics 1

What this covers

Building free-body diagrams for connected systems, inclines, elevators, and circular motion, then converting them into component equations along chosen axes
Choosing between kinematics, energy conservation, and momentum conservation for a given problem — and recognising collision problems where kinetic energy is not conserved but momentum is
Rotational analogues: torque as rF⊥, rotational inertia changing with axis choice, angular momentum conservation when net external torque is zero, and rolling without slipping
Simple harmonic motion for mass-spring and pendulum systems: identifying the restoring force, why period is independent of amplitude, and reading energy bar charts
Fluid statics and dynamics: pressure with depth, buoyant force from displaced volume, continuity, and Bernoulli's equation applied to pipes and tanks
Writing paragraph-length argument responses and interpreting lab-based questions: linearising data, deciding what to graph so the slope means something, and discussing experimental uncertainty

Where learners get stuck

Treating 'centripetal force' as a new force to add to a free-body diagram: The textbook phrase sounds like a force with its own source, but it is the net result of real forces (tension, gravity, friction, normal). Students draw an extra inward arrow and end up double-counting, which wrecks vertical-circle and banked-curve problems.
Assuming the normal force always equals mg: It does in the most common first example — a block on flat ground — so it gets memorised as a rule rather than derived from Newton's second law perpendicular to the surface. It then fails on inclines, in accelerating elevators, and whenever another vertical force is present.
Using conservation of energy on collisions, or momentum on problems with external forces acting over time: Both are 'conservation laws', so students pick whichever variables they were given rather than checking the conditions. The fix is a habit: state the system, then ask whether external forces do work and whether external impulse acts, before choosing.

What a session looks like

A typical session starts with you describing a problem scenario aloud and naming the system and the forces on it before any equations appear. Evelyn asks what you expect to happen physically — does the block speed up, does the period change — then works through the symbolic setup with you, stopping when a sign or a component looks wrong. Numerical substitution comes last. For rotational and fluids questions, you'll often be asked to compare two situations rather than compute one, which mirrors the qualitative-quantitative translation items on the exam. Sessions can also be used to rehearse a paragraph-length argument response out loud and then tighten it into something that would score.

Helpful to know first

Comfort with algebra: rearranging multi-variable equations symbolically and solving simultaneous equations
Right-triangle trigonometry — resolving vectors into components with sine and cosine, and knowing which is which
Basic vector addition and the idea that direction carries a sign in one-dimensional problems
No calculus is required; that distinction belongs to the Physics C courses

Questions

What's the difference between AP Physics 1 and AP Physics C: Mechanics?: They cover overlapping mechanics content, but Physics 1 is algebra-based and spends more time on conceptual reasoning, experimental design, and written argumentation. Physics C: Mechanics uses derivatives and integrals and moves faster through the same topics. Physics 1 also includes fluids, which Physics C does not.
Does AP Physics 1 still include waves, sound, and circuits?: No. Following the course revision, waves, sound, and simple electric circuits moved out of Physics 1, and fluids moved in. If you are working from an older review book, the wave and circuit chapters are no longer part of this course.
Why do I understand the concepts but still lose marks on free response?: Most lost points come from unstated assumptions: not defining the system, not justifying why a quantity is conserved, or jumping to a formula without saying which principle it comes from. Practising the explanation out loud before writing it tends to surface those gaps quickly, which is what voice sessions are set up for.
Can this help with the lab and experimental design questions?: Yes. Sessions can work through choosing what to measure, deciding which variables to plot so that a straight-line fit gives you the quantity you want, and explaining how a specific source of error would shift the result in a stated direction.