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**Chapter 3: Kinematics in Two Dimensions; Vectors**

**Objectives**

- What is the difference between a
**vector**and a**number (scalar)**? - How can I
**add vectors**? - How can
**vectors be subtracted**? - Can
**vector components**help me use vectors? - What is
**projectile motion**? - How do you
**describe the motion**of a projectile? - What is
**relative motion**?