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...) is an American gang of homeless men who move about in railroad cars , particularly in the northwestern United States. 美國(FTRA)的...
一個車廂大眾 2.50 × 10的4次方公斤的速度移動與碰撞的4.00m/s.It和夫婦與其他三家加上火車車廂，每一個質量相同的單台車昂朝同一方向與初始速度2.00米\秒，（一）什麼是速度的4節車廂 imme - diately碰撞後？（二）是多少enegert跨形成了內部 enegy在碰撞？
(a). 令碰撞後速度為v3,則: m1v1+m2v2=(m1+m2)v3 =>m1*4+3*m1*2=4*m1*v3 =>m1*10=4*m1*v3 =>v3=2.5 m/s (b) Eloss=(1/2)(m1)(v1^2)+(1/2)(m2)(v2^2)-(1/2)(m1+m2)(v3^2) =(1/2)(m1)(16)+(1/2)(3m1)(4)-(1/2)(4m1)(6.25) =0.5*2.5*10^4*(16+12-25)=37500 J.
... offer formally tender3: (n.) 1. One that tends 2. A railroad car attached to the locomotive carrying fuel and water dreamt: (v...
...for the railroad the unit is all, and at not the distant place finds a railroad engineering with the car .
...鐵路是鋪設在一般路面,則用: b. I run across the railroad . 表示我從鐵路這頭跑過那頭,即橫跨過去之意. 2. through...through the window. 鳥從窗戶飛進來. b. A lot of cars go through the city every day. 許多車子在市區裡穿梭. c...
... as I was about to abandon my car , one teenage girl lifted the gate and signaled... able to shake the memory of life-death situation at that railroad crossing. I don't think I ever will...
...lumber from the mills as it's being shipped, and have the railroad divert the car to the buyer. Jacque的主要工作是去找可以把船上的木料買走的買家...
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