E = mc² F = qvB PV = nRT λ = h/p ΔU = Q - W n₁sinθ₁ = n₂sinθ₂ V = IR F = kq₁q₂/r² ε = -dΦ/dt KE = ½mv²
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AP Physics 2: The Deep Reasoning Guide
2025 Edition
500+
Practice Problems
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Chapters
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Diagrams
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Practice Exams

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Equation Cheat Sheet

All 49 essential equations across 7 units, plus 14 important constants. Perfect for quick reference during study sessions.

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Diagnostic Pre-Test

21 questions covering all 7 units with full answer explanations. Identify your strengths and weaknesses before you start studying.

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Test Day Checklist & Index

Everything you need for exam day: what to bring, what to review, last-minute tips, plus a comprehensive topic index.

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FRQ Scoring Guide

Learn exactly how AP readers grade free-response questions. Maximize your points with these insider tips and strategies.

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Answer Explanations (Ch 1-10)

Detailed solutions for all practice problems in Chapters 1-10, including why each wrong answer is incorrect.

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Answer Explanations (Ch 11-20)

Detailed solutions for all practice problems in Chapters 11-20, including why each wrong answer is incorrect.

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Answer Explanations (Ch 21-31)

Detailed solutions for all practice problems in Chapters 21-31, including why each wrong answer is incorrect.

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Frequently Asked Questions

While these resources are designed to complement the book, many can be used independently for AP Physics 2 preparation. However, the book provides the complete context and detailed explanations that make these resources most effective.

Deep Reasoning focuses on understanding WHY physics works the way it does, not just memorizing formulas. This approach helps you solve problems you've never seen before by applying fundamental concepts, which is exactly what the AP exam tests.

We regularly update and add new resources, especially before AP exam season. Subscribe to our email list to be notified when new materials are available.

Absolutely! Teachers are welcome to use and share these resources with their students. The book also includes a comprehensive 36-week pacing guide designed specifically for educators.

We appreciate your help in keeping our resources accurate! Please email us at mir@just-fun.org with the specific error and location. We'll review and update as needed.