AP Physics New Curriculum Analysis and Key Reforms | AP物理新大纲解析与改革要点

📚 AP Physics New Curriculum Analysis and Key Reforms | AP物理新大纲解析与改革要点

The College Board has introduced significant revisions to the AP Physics courses, effective from the 2024–2025 academic year. These updates affect all four AP Physics subjects: AP Physics 1 (Algebra-Based), AP Physics 2 (Algebra-Based), AP Physics C: Mechanics, and AP Physics C: Electricity & Magnetism. The changes aim to better align the curriculum with college-level expectations, strengthen science practices, and provide a more coherent progression of content. This article breaks down the key reforms, explains what is new in each course, and offers guidance for students and educators navigating the transition.

美国大学理事会（College Board）对AP物理课程进行了重大修订，自2024–2025学年起生效。这些更新涉及全部四门AP物理科目：AP物理1（代数基础）、AP物理2（代数基础）、AP物理C：力学和AP物理C：电磁学。改革旨在更好地与大学水平要求接轨，强化科学实践能力，并构建更连贯的内容体系。本文将分解关键改革要点，解释每门课程的新变化，并为师生适应过渡提供指导。

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1. Overview of the AP Physics Reforms | 改革总览

Starting in May 2025, all AP Physics exams will feature updated formats, redistributed content, and a heightened emphasis on scientific inquiry and reasoning. The College Board has restructured the sequence of topics to avoid overlap and ensure a logical flow from foundational to advanced concepts. AP Physics 1 and 2 have swapped several units: electricity, circuits, and mechanical waves have moved from Physics 1 to Physics 2, while fluids have shifted from Physics 2 to Physics 1. AP Physics C courses have expanded exam durations, introduced calculator use, and refined topic outlines to deepen understanding without requiring calculation-heavy techniques.

自2025年5月起，所有AP物理考试将采用更新的格式、重新分配的内容，并更加重视科学探究和推理。美国大学理事会重组了主题顺序，以避免重复，确保从基础到高级概念的逻辑递进。AP物理1和2交换了若干单元：电学、电路和机械波从物理1移至物理2，而流体则从物理2移至物理1。AP物理C课程延长了考试时长，允许使用计算器，并精炼了主题纲要，以深化理解而无须依赖繁重计算技巧。

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2. AP Physics 1: New Content and Exam Structure | AP物理1：新内容与考试结构

AP Physics 1 now covers eight units, having removed electric circuits and mechanical waves. The new unit on fluids brings hydrostatics and hydrodynamics into the algebra-based course for the first time. The updated exam features 40 multiple-choice questions (80 minutes) and 4 free-response questions (100 minutes), replacing the previous 50 MC / 90 min and 5 FRQ / 90 min format. Students may use a graphing calculator on the entire exam, which was previously not permitted in the free-response section.

AP物理1现涵盖八个单元，已移除电路和机械波。新增的流体单元首次将流体静力学和流体动力学引入代数基础课程。更新后的考试包括40道选择题（80分钟）和4道自由回答题（100分钟），取代了此前50道选择题/90分钟、5道自由回答/90分钟的格式。学生可以在整场考试中使用图形计算器，而此前自由回答部分不允许使用计算器。

The table below compares the unit organization before and after the reform.

下表对比了改革前后的单元组织。

Old Units (pre-2025)	New Units (2025 onward)
1. Kinematics	1. Kinematics
2. Dynamics	2. Force and Translational Dynamics
3. Circular Motion & Gravitation	(integrated into units 2,5,7)
4. Energy	3. Work, Energy, and Power
5. Momentum	4. Linear Momentum
6. Simple Harmonic Motion	7. Oscillations
7. Torque & Rotational Motion	5. Torque and Rotational Dynamics, 6. Energy and Momentum of Rotating Systems
8. Electric Charge & Circuit	(moved to AP Physics 2)
9. Mechanical Waves & Sound	(moved to AP Physics 2)
—	8. Fluids

Key equations like Bernoulli’s principle are now essential:

P + ½ ρ v² + ρ g h = constant

. Rotational dynamics also gain prominence with expressions for rotational kinetic energy

K = ½ I ω²

and angular momentum conservation.

现在伯努利原理等关键方程是必备内容：

P + ½ ρ v² + ρ g h = 常数

。转动动力学也变得更加重要，涉及转动动能表达式

K = ½ I ω²

及角动量守恒。

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3. AP Physics 2: Revised Curriculum and Focus | AP物理2：修订后的课程与重点

AP Physics 2 has been restructured into eight units, absorbing electric circuits and mechanical waves from Physics 1 while moving fluids to Physics 1. The course now covers thermodynamics, electric force and field, electric circuits, magnetism and electromagnetic induction, geometric optics, physical optics, mechanical waves and sound, and modern physics (quantum, atomic, and nuclear). The exam format mirrors Physics 1: 40 MC (80 min) and 4 FRQ (100 min), with graphing calculators allowed throughout.

AP物理2重组为八个单元，吸收了原属于物理1的电路和机械波，同时将流体移入物理1。该课程现涵盖热力学、电场力与电势、电路、磁学与电磁感应、几何光学、物理光学、机械波与声，以及现代物理（量子、原子和核物理）。考试格式与物理1相同：40道选择题（80分钟）和4道自由回答题（100分钟），全程允许使用图形计算器。

Optics and wave phenomena now form a more coherent narrative, linking geometric ray optics with interference and diffraction. Students must be comfortable with the wave equation

v = f λ

, Snell’s law

n₁ sin θ₁ = n₂ sin θ₂

, and the double-slit fringe spacing

Δy = λ L / d

. The integration of mechanical waves strengthens the connection between sound, standing waves, and electromagnetic waves.

光学和波动现象现在构成了更连贯的体系，将几何光线光学与干涉、衍射联系起来。学生需要熟练掌握波动方程

v = f λ

、斯涅尔定律

n₁ sin θ₁ = n₂ sin θ₂

以及双缝条纹间隔公式

Δy = λ L / d

。机械波的纳入加强了声波、驻波与电磁波之间的联系。

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4. AP Physics C: Mechanics – Broader Coverage and Exam Changes | AP物理C：力学 – 范围拓展与考试变化

AP Physics C: Mechanics retains its calculus-based rigor but now offers a longer, more comprehensive exam. The test will consist of 50 multiple-choice questions (90 minutes) and 4 free-response questions (90 minutes), totaling 3 hours—twice the length of the pre-reform exam. Graphing calculators are permitted for the first time, enabling more realistic data analysis and computation. The syllabus still includes kinematics, Newton’s laws, work/energy, momentum, rotation, oscillations, and gravitation, with greater emphasis on the energy-and-momentum approach to rotating systems.

AP物理C：力学保持了基于微积分的严谨性，但考试变得更长、更全面。试卷包含50道选择题（90分钟）和4道自由回答题（90分钟），总计3小时——是改革前考试的两倍时长。首次允许使用图形计算器，使数据处理和计算更贴合实际研究。教学大纲仍涵盖运动学、牛顿定律、功与能、动量、转动、振动和引力，并更强调用能量与动量方法处理转动系统。

Students will frequently encounter integrals for moment of inertia, and the parallel-axis theorem

I = I_cm + M d²

. Rotational dynamics equations

Σ τ = I α

and energy conservation in rolling objects

½ m v² + ½ I ω² + m g h = constant

will be tested in depth. The extra time allows for multi-step FRQs that evaluate experimental design and error analysis.

学生将频繁遇到转动惯量的积分，以及平行轴定理

I = I_cm + M d²

。转动动力学方程

Σ τ = I α

和滚动物体的能量守恒

½ m v² + ½ I ω² + m g h = 常数

将被深入考查。额外的考试时长允许出现多步骤的自由回答题，评估实验设计和误差分析。

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5. AP Physics C: Electricity & Magnetism – Refined Scope and Skills | AP物理C：电磁学 – 精细化的范围与技能

Similar to Mechanics, the E&M exam expands to 50 MC (90 min) and 4 FRQ (90 min) and now permits graphing calculators. The core units—electrostatics, conductors/capacitors, electric circuits, magnetic fields, and electromagnetism—remain intact, but the deeper emphasis on visual and mathematical modeling aligns with the revised science practices. FRQs will increasingly ask students to justify their reasoning with reference to fundamental laws such as Gauss’s law and Ampère’s law.

与力学类似，电磁学考试扩展为50道选择题（90分钟）和4道自由回答题（90分钟），并允许使用图形计算器。核心单元（静电学、导体/电容器、电路、磁场和电磁学）保持不变，但对可视化和数学建模的更深层次重视与修订后的科学实践一致。自由回答题会更多要求考生引用高斯定律、安培定律等基本定律来论证推理过程。

Key relations like the capacitance of a parallel-plate capacitor

C = ε₀ A / d

and the magnetic force on a moving charge

F = q v × B

remain essential. Students must also manipulate Maxwell’s equations conceptually, understanding that a changing electric flux induces a magnetic field and vice versa. The calculator

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