2022 英语周报 高一 牛津 55答案

应用文写作@One possihle version:Dear EricI'm writing to express my sincere gratitude to you for helping me create a personal website last saturday.After learning about my difficulty in creating a personal website, you offered guidance to me. First of allyou taught me the steps of creating a personal website in detail. Then you told me what I should pay attention toin this process. Whenever I had a problem, you explained it to me carefully and patiently. Finally, with yourhelp, I succeeded in creating my own website. In addition, you gave me some tips on Internet safety.Many thanks again for your help. I hope that I'll learn more relevant knowledge from you.Yours

(1)设小球p从斜面上滑下的加速度为a,由牛顿第二定律得: mosin6=ma,设小球p从斜面上滑下所需时间为t1,由运动学公式得:L=at2代入数据解得:t1=18;(2)小球q做平抛运动,设抛出速度为v0,飞行时间为t1,水平方向:x=0t1,x=Lcs30代入数据解得:t0=3m/s答:(1)小球p从A点滑到B点的时间为18;(2)小球q抛出时初速度的大小为23m/s

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