1. Chapter 4 Motion in Two and Three Dimensions 第4章 二維與三維運動

2. Chapter 4 Motion in Two and Three Dimensions
4-1 What is Physics?
4-2 Position and Displacement
4-3 Average Velocity and Instantaneous Velocity
4-4 Average Acceleration and Instantaneous Acceleration
4-5 Projectile Motion 拋體運動
4-6 Projectile Motion Analyzed
4-7 Uniform Circular Motion 等速圓周運動
4-8 Relative Motion in One Dimension
4-9 Relative Motion in Two Dimensions

3. 4-1 What is Physics? dogfight 空戰；纏鬥 sports engineer free throw 罰球
overhand push shot
underhand loop shot

4. 4-2 Position and Displacement
position vector
displacement

7. 4-3 Average Velocity and Instantaneous Velocity

10. Sample Problem

11. 4-4 Average Acceleration and Instantaneous Acceleration

13. Sample Problem

14. 4-5 Projectile Motion 拋體運動

18. 4-6 Projectile Motion Analyzed

24. 4-7 Uniform Circular Motion 等速圓周運動
uniform speed = constant speed
centripetal acceleration 向心加速度
revolution 繞轉、旋轉、迴轉
period of revolution
period 周期（週期）

27. 4-8 Relative Motion in One Dimension
reference frame 參考坐標系

28. 4-9 Relative Motion in Two Dimensions

29. Sample Problem 4-12