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Chapter 2 Motion Along a Straight Line 第 2 章 直線運動
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Chapter 2 Straight Line Motion 2-1 What is Physics? 2-2 Motion 2-3 Position and Displacement 2-4 Average Velocity and Average Speed 2-5 Instantaneous Velocity and Speed 2-6 Acceleration 2-7 Constant Acceleration: A Special Case 2-8 Another Look at Constant Acceleration 2-9 Free-Fall Acceleration 2-10 Graphical Integration in Motion Analysis
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術語與專門名詞 kinematics 運動學 mechanics 力學 dynamics 動力學 statics 靜力學
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2-1 What is Physics? NASCAR –National Association for Stock Car Auto Racing tectonic plate 地殼板塊 artery 動脈 one-dimensional motion 一維運動
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2-2 Motion 運動 kinematics 運動學 particle 質點;粒子 stiff pig stiff 剛性 pig 生鐵、銑鐵 playground slide 遊戲場滑梯 tumbleweed 風滾草
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2-3 Position and Displacement reference point 參考點、基準點 origin 原點 (zero point 零點 ) position 位置 displacement 位移 x = x 2 x 1 distance 距離 vector quantity 向量 (vector) –magnitude 量值 (absolute value 絕對值 ) –direction 方向
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Position
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2-4 Average Velocity and Average Speed armadillo 犰狳 average velocity 平均速度 v avg slope 斜率 average speed 平均速率 s avg acceleration 加速度
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Graph of x(t)
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Average Velocity
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Sample Problem
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2-5 Instantaneous Velocity and Speed instantaneous velocity 瞬時速度 v velocity 速度 v speed 速率 –Speed is the magnitude of velocity speedometer 速率計
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Sample Problem
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2-6 acceleration 加速度 average acceleration 平均加速度 a avg instantaneous acceleration 瞬時加速度 a acceleration 加速度 a
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2-7 Constant Acceleration: A Special Case
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Equations for Motion with Constant Acceleration
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Sample Problem
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2-8 Another Look at Constant Acceleration indefinite integral 不定積分 antiderivative 反導函數
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2-9 Free-Fall Acceleration freely falling body 自由落體 free-fall 自由下落 free-fall acceleration 自由落體加速度、 自由下落加速度 free space 真空 (vacuum) g = 9.8 m/s 2 a = g = 9.8 m/s 2
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Sample Problem
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2-10 Graphical Integration in Motion Analysis
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Sample Problem whiplash 鞭索 whiplash injury rear-end collision 追撞 torso 軀幹
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Sample Problem
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