Core Idea

Introduce vectors as the universal language for describing quantities that require magnitude and direction, building on the measurement honesty established in Lecture 1.1.

Key Concepts

• Vector notation and representation
• Head-to-tail addition
• Component resolution using trigonometry
• Vector subtraction and equilibrium

Essential Questions

• Why can't scalars alone describe many physical phenomena?
• How do components allow us to reconcile multiple directions at once?
• What is the relationship between graphical and analytical vector addition?