2021-2022学年陕西省西安市鄠邑区高一（下）期末物理试卷（附答案详解）

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2021-2022
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14ᨴᳫᙢᳫḄ⍝"#r=3.\47r2,-(1)ᙢᳫḄ12M456gR2T247r2ூ᪆௃(1)᪷;ᨵ<=>?ᙢᳫḄ12.(2)᪷;ᨵᔣ@ᔠᕜBḄᜧ>?ᨴᳫᙢᳫḄ⍝"#.DE⚪ḄᐵHIJᨵKLḄMN=⌕PQ-1ஹᨵ<=2ஹᨵᔣSTᮣVᵨ.18.ூ,ᫀ௃-(1)ZᢝឤK]᳛,`ᨬᜧbᨵP=n^fᐭᦪ;i=50m/s(2)ᵫpqKLᨵF-f=ma]᳛sᑮuK]᳛bP=Fvᒴvwx`ybzᐵ{ᨵ஺=atὶ~fᐭᦪ;-t=gs,-(1)ZᢝឤK]᳛Ḅᨬᜧ`450m/s6(2)2zn/s2Ḅi`ᒴiᒴiḄᨬbz4gs஺ூ᪆௃(1)ᢝឤK]᳛`ᨬᜧbᨵP(2)᪷;TKᳮ,஺E⚪ὃḄ⚪ᐵHIJ]᳛`Ḅᐵ{`ᨬᜧb=19.ூ,ᫀ௃-(1)bᵫpqKL-mgsinS-fimgcosO=ma-a=4.0m/s2ᵫd=2Ẅ2bz4-t—0.5s6(2)yᢱbḄ᳛4-v=at=2m/sbᵫTKᳮ-H1—(mgsind+/)%=0—-mv9z-x=0.25m஺

15,-(1)ᙽyḄbz40.5s6(2)ᙽᢱy¦§Ḅᨬᜧ¨©40.25m஺ூ᪆௃(1)bᵫpqKL>i`ᜧªᵫ«>bz6(2)ᵫ`«>yᢱbḄ᳛ᵫTKᳮ«>Ḅᨬᜧ¨©஺¬i`ª᪷;⚪Á⌕>ÂÃ,6Ä⍝i`°ὶ{☟¾¸¾Ḅ᫑᫡஺20.ூ,ᫀ௃(1)ᳫÈ4ÉᑮBÉ᪷;TKᳮᨵmgH=Ekfᐭᦪ;-Ek=0.75/(2)ᳫÈ4Éᑮ஺ÉᵫÊTËឤKLᨵ1,mg(H+R)=-mv^fᐭᦪ;%-5m/s(3)ᳫᙠCɹᑮḄÍᢝ=ḄᔠᔣᵫpqKLᨵ-N-mg=Vcm—Rfᐭᦪ;N=6NᵫpqÎKLᨵᳫ¬⍝ḄÏN'=6N஺ூ᪆௃(1)ᳫÈÐÑᑮBÉḄ¶·ÒᵫTKᳮᑡ?Ô·ᓽ«>஺(2)4ᑮCḄ¶·ÒÊTËឤᵫÊTËឤᑡ?Ô·ᓽ«>6(3)ᙠCÉb
ᙊᕜᵫÊTËឤ>CÉḄ`஺ᙠCÉᵫ=¸ÍᢝḄᔠÖ4ᔣᵫᔣḄ«>⍝¬×ḄÍᢝN஺⚪ÒᳫḄØᔊÚÛN¶·ᒹÝÞᵫßµஹᙊᕜ⌕IJᔜN¶·ḄáL஺16⚓ᐳ16⚓