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Summary : 2. Motion In A Straight Line 摘要: 2. 直線運動

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1 Summary : 2. Motion In A Straight Line 摘要: 2. 直線運動

2 Position 位置 Displacement 位移 Average velocity 平均速度 Average speed 平均速率 d = Distance travelled 移動距離

3 Average Motion 平均運動 Kinematics = Study of motion without regard to its cause. 運動學 = 不論起因的運動研究 Pizza Trip: 15 min to Pizza Hut 10 km away & back. 比薩之旅: 15分鐘到10公里外的比薩屋再回來。 Average speed 平均速率 Arrive at pizza place 抵達比薩屋 Displacement 位移 Return home 返家 Average velocity 平均速度 Leave home 離家

4 (Instantaneous) velocity (瞬時)速度
Average velocity 平均速度 (Instantaneous) velocity (瞬時)速度 ( 1-D ) Average acceleration 平均加速度 Mathematica (Instantaneous) acceleration (瞬時)加速度

5 See Appendix A (page A-5) for a list of common derivatives.
附錄 A (A-5頁)中有常用的導數公式

6 Position, Velocity, & Acceleration 位置,速度,和加速度
x t Mathematica t = 2.6 v = 0, x = max t = 1.2 a = 0, v = max

7 Constant acceleration
等加速度


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