Introduction to Physics

Welcome to Introduction to Physics! This section covers foundational concepts, essential skills, and practice problems to get you started on your physics journey.

Caliper measuring the width of a steel beam to demonstrate precise length measurement in physics — Physics begins with precise measurement of physical quantities such as length, which must be defined consistently and accurately.

Core Concepts

Understand the fundamental ideas that underpin all of physics. Click on a concept to learn more and find related skills and problems.

📘 Physics Symbols and Notation
📘 SI Units and Base Quantities
📘 Dimensional Analysis
📘 Uncertainty
📘 Accuracy vs. Precision
📘 Significant Figures Rules
📘 Sig Figs in Addition and Subtraction
📘 Sig Figs in Multiplication and Division
📘 Graphing Data and Relationships

Essential Skills

Learn the step-by-step methods for solving common physics problems.

🎯 Judging Accuracy and Precision
🎯 Performing Unit Conversions
🎯 Using Parentheses in Calculations

Practice Problems

Test your understanding and apply what you've learned with these problems.

Sig Figs in Addition/Subtraction Problems
Sig Figs in Multiplication/Division Problems
Significant Figures Problems
Unit Conversion Problems (Beginner)
Unit Conversion Problems (Challenging)
Unit Conversion Problems (Intermediate)