10–15% of the AP exam. 7 key topics. 4 common errors analyzed.
Unit 1 (Kinematics) is part of AP Physics 1 (Algebra-Based). Concept-first: understand the physical reasoning before memorizing equations — the four named FRQ types reward explanation over plug-and-chug.
These are the most frequently penalized mistakes on AP exam FRQs and MCQs. Review each before your next practice session.
Treating displacement and distance as interchangeable — distance is scalar (path length) while displacement is vector (change in position), leading to incorrect sign or magnitude in multi-leg motion problems
Misreading kinematic graphs: confusing the slope of a position-time graph (velocity) with the slope of a velocity-time graph (acceleration), or treating area under an acceleration-time curve as velocity rather than change in velocity
Forgetting to decompose 2D projectile motion into independent horizontal and vertical components, then applying a single kinematic equation to the full trajectory
Applying kinematic equations to non-constant acceleration situations — these equations are only valid when acceleration is uniform
Our worked solutions and practice questions are original instructional content created by Tian2 AP. They are aligned to the concepts and skills described in College Board’s Course and Exam Description and are not reproductions of, or affiliated with, College Board’s official materials.