физика 9кл перышкин гутник_2001_ответы и решения

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  • 1. >hfZrgyy jZ[hlZihnbabd_ aZ deZkkd mq_[gbdmNbabdZdeMq_[^eyh[s_h[jZahZlmq_[aZ_^_gbc:I_jurdbg?F=mlgbd_ ba^kl_j_hlbi FjhnZ ]1

2. Kh^_j`Zgb_hijhku ............................... 7 1. ...................................... 7 2. ...................................... 7 3. ...................................... 7 4. ...................................... 7 5. ...................................... 8 6. ...................................... 8 7. ...................................... 8 8. ...................................... 9 9. ...................................... 9 10. ..................................... 9 11. .................................... 10 12. .................................... 11 13. .................................... 11 14. .................................... 12 15. .................................... 12 16. .................................... 12 18. .................................... 13 19. .................................... 13 20. .................................... 13 21. .................................... 14 22. .................................... 14 23. .................................... 14 24. .................................... 15 25. .................................... 15 26. .................................... 16 27. .................................... 162 3. 28. .................................... 1729. .................................... 1730. .................................... 1731. .................................... 1832. .................................... 1833. .................................... 1934. .................................... 1935. .................................... 1936. .................................... 2037. .................................... 2038. .................................... 2139. .................................... 2140. .................................... 2142. .................................... 2143. .................................... 2244. .................................... 2345. .................................... 2346. .................................... 2447. .................................... 2548. .................................... 2549. .................................... 2550. .................................... 2651. .................................... 2752. .................................... 2753. .................................... 2754. .................................... 2855. .................................... 2856. .................................... 2957. .................................... 30 3 4. 58. .................................... 31 59. .................................... 32 60. .................................... 32 61. .................................... 32 62. .................................... 33 63. .................................... 33 64. .................................... 34 65. .................................... 34 66. .................................... 34 67. .................................... 35 68. .................................... 35 69. .................................... 36 70. .................................... 36 72. .................................... 37MijZ`g_gby ........................... 39 MijZ`g_gb_........................... MijZ`g_gb_........................... 39 MijZ`g_gb_........................... 39 MijZ`g_gb_........................... 39 MijZ`g_gb_........................... 39 MijZ`g_gb_........................... 40 MijZ`g_gb_........................... 40 MijZ`g_gb_........................... 41 MijZ`g_gb_........................... 41 MijZ`g_gb_.......................... 42 MijZ`g_gb_.......................... 42 MijZ`g_gb_.......................... 42 MijZ`g_gb_.......................... 43 MijZ`g_gb_.......................... 44 444 5. MijZ`g_gb_..........................MijZ`g_gb_..........................44MijZ`g_gb_..........................45MijZ`g_gb_..........................45MijZ`g_gb_..........................46MijZ`g_gb_..........................47MijZ`g_gb_..........................47MijZ`g_gb_..........................47MijZ`g_gb_..........................48MijZ`g_gb_..........................48MijZ`g_gb_..........................48MijZ`g_gb_..........................49MijZ`g_gb_..........................49MijZ`g_gb_..........................50MijZ`g_gb_..........................50MijZ`g_gb_..........................50MijZ`g_gb_..........................50MijZ`g_gb_..........................50MijZ`g_gb_..........................51MijZ`g_gb_..........................51MijZ`g_gb_..........................51MijZ`g_gb_..........................52MijZ`g_gb_..........................52MijZ`g_gb_..........................53MijZ`g_gb_..........................53MijZ`g_gb_..........................53MijZ`g_gb_..........................53MijZ`g_gb_..........................54MijZ`g_gb_..........................5454 5 6. MijZ`g_gb_.......................... MijZ`g_gb_.......................... 55 MijZ`g_gb_.......................... 55 MijZ`g_gb_.......................... 55 MijZ`g_gb_.......................... 55 55AZ^Zqbij_^eZ]Z_fu_ ^eyihlhj_gby bijb qZkZo nbabdb g_^_ex .......... 56EZ[hjZlhjgu_ jZ[hlu .................. 64 EZ[hjZlhjgZy jZ[hlZ ................. EZ[hjZlhjgZy jZ[hlZ ................. 64 EZ[hjZlhjgZy jZ[hlZ ................. 67 EZ[hjZlhjgZy jZ[hlZ ................. 67 EZ[hjZlhjgZy jZ[hlZ ................. 68 EZ[hjZlhjgZy jZ[hlZ ................. 69 706 7. hijhku1.1. FZl_jbZevgZy lhqdZ h[eZ^Z_l fZkkhc gh bf__l ij_g_[j_`bfhfZeu_jZaf_ju2. FZl_jbZevgZylhqdZ wlhZ[kljZdlgh_ihgylb_3. eymijhs_gbyaZ^Zq4. Dh]^Z mkehbbaZ^ZqbjZaf_jZfbwlh]hl_eZfh`ghij_g_[j_qv5. AZ fZl_jbZevgmx lhqdm fh`gh ijbgylv Zlhfh[bev ijbhij_^_e_gbb _]h kdhjhklb gZ fZjrjml_ ] Ijhlbgh ] FhkdZWlhl `_ Zlhfh[bev g_evay kqblZlv fZl_jbZevghc lhqdhc ijbjZkq_l_^Ze_gbyhdZauZ_fh]hbfgZ^hjh]m6. IjbihklmiZl_evghf^b`_gbb7. FZl_jbZevghc lhqdhc gZauZ_lky l_eh jZaf_jZfb dhlhjh]hfh`ghij_g_[j_qv mkehbyo^ZgghcaZ^Zqb8. Ijbijyfhebg_cghf^b`_gbbl_eZ9. Kbkl_fZhlkq_lZhlghkbl_evghdhlhjhcjZkkfZljbZxl^b`_gb_ij_^klZey_l kh[hc khhdmighklv kbkl_fu dhhj^bgZl ijb[hjZ ^eybaf_j_gby j_f_gb b lhqdb hlkq_lZ k dhlhjhc kyaZgZ kbkl_fZdhhj^bgZl2.1. G_lk_aZbkblhlljZ_dlhjbb^b`_gbyG_evaymagZlv]^_[m^_lZlhfh[bevq_j_a qZk_kebg_agZ_rvihdZdbf^hjh]Zfhgih_^_l2. _dlhjgZijZe_gguchllhqdbhlkq_lZgZqZeZ^b`_gbyd lhqd_hlkq_lZdhgpZ^b`_gbyl_eZ3. Fh`gh3.1. uqbke_gbyijhbah^ylkhkdZeyjgufb_ebqbgZfb2. ?keb _dlhj khgZijZe_g k hkvx lh _]h ijh_dpby gZ g__ [m^_liheh`bl_evgZ b gZh[hjhl _keb _dlhj ijhlbhiheh`gh gZijZe_ghkblh_]hijh_dpbygZg__[m^_lhljbpZl_evgZ3. o1 = o0 + so.4.1. Kdhjhklvx jZghf_jgh]h ijyfhebg_cgh]h ^b`_gby gZauZ_lky7;ihklhygguc _dlhj vjZguc hlghr_gbx i_j_f_s_gby s l_eZ aZ ; 7 sex[hcijhf_`mlhdj_f_gbt d agZq_gbxwlh]hijhf_`mldZ v = . t7 8. 2. Ihnhjfme_sx = vxt.3. Ijbijyfhebg_cghfjZghf_jghf^b`_gbb4. Wlhb^ghbajbkmq_[gbdZ5. Hgb^b`mlkyjZghf_jgh jZaguogZijZe_gbyokhkdhjhklyfbjZgufbihfh^mex b dfq 5.1. D g_jZghf_jghfm^b`_gbx2. Kdhjhklvl_eZ ^Zgghclhqd_ ^Zggucfhf_glj_f_gb 73. Mkdhj_gb_f jZghmkdhj_ggh]h ^b`_gby l_eZ a gZauZ_lky 7_ebqbgZjZgZyhlghr_gbxbaf_g_gbykdhjhklb v d ijhf_`mldm 7 7 77 v v v 0j_f_gbtaZdhlhjucwlhbaf_g_gb_ijhbahreh a = =.4. b`_gb_k ihklhyggufmkdhj_gb_f tt5. HgihdZauZ_l[ukljhlmbaf_g_gbyfh^mey_dlhjZkdhjhklb6.kbkl_f_KBfk2.7. M_ebqbZ_lky ijb iheh`bl_evghf mkdhj_gbbwlhf kemqZ__dlhjkdhjhklbb _dlhjmkdhj_gbykhgZijZe_gu 9. mf_gvrZ_lkyijb hljbpZl_evghfwlhf kemqZ_ _dlhj kdhjhklb b _dlhjmkdhj_gbyijhlbhiheh`ghgZijZe_gu 10. 6.1. Z 11. vx = v0x + axt[ 12. vx = axt.2.h[hbokemqZyoijyfZy kemqZ_ Zijhoh^ysZyq_j_agZqZehkbkl_fudhhj^bgZl3. Wlb ^b`_gby jZghmkdhj_ggu_ h^gZdhi_jhf kemqZ_mkdhj_gb_iheh`bl_evghZ hlhjhfhljbpZl_evgh 7.1. Ijh_dpby_dlhjZi_j_f_s_gbyuqbkey_lkyihnhjfme_ axt 2 s x = v0 x t + .Ih^klZbf wlmnhjfmemujZ`_gb_^eyijh_dpbbmkdhj_gby 2 v v0 xax = x.Ihemqbf tv v0 x t 2 v0 x + v xs x = v0 x t + x = t . t 22 8 13. LZddZdv0x = AO, vx = BC, t = OB kfjbkZ 14. mq_[gbdZ 15. lhfuihemqZ_fqlhijh_dpby_dlhjZi_j_f_s_gby s x = AO + BC OBjZgZiehsZ^bnb]mjuOACB ijyfhm]hevghcljZi_pbbk2hkghZgbyfbAO, BC b ukhlhcOB.axt 22. s x = v0 x t + . 2 8.1. Ihnhjfme_ s x =^eyijh_dpbbi_j_f_s_gby s = 2 axt at 2^eyfh^mey_dlhjZi_j_f_s_gby 222.n2 jZaihkdhevdms ~ t2 s n a (nt1 ) 2 / 23. =2= n2 . st14. DZdjy^ihke_^hZl_evguog_q_lguoqbk_eat1 / 25. eyhij_^_e_gbyjZghmkdhj_ggh]h^b`_gby1.jZaguokbkl_fZohlq_lZwlb_ebqbgubf_xljZagu_agZq_gbyb 9.ihjZaghfmhjb_glbjhZggu2. RZjbd iZ^Zxsbc gZ ihe ^b`ms_]hky Zlhfh[bey g_ bf__l]hjbahglZevghc kdhjhklb hlghkbl_evgh g_]h Hlghkbl_evgh A_febhgbf__lkdhjhklvjZgmxkdhjhklbZlhfh[bey3. Kdhjhklv imlv ljZ_dlhjby b l^ jZaebqgujZaguo kbkl_fZohlkq_lZ4. =_ebhp_gljbq_kdZy kbkl_fZ kyaZgZ k Khegp_f ]_hp_gljbq_kdZyk A_fe_c5. Kf_gZ^gyb ghqbh[tykgy_lkyjZs_gb_fA_febhdjm]kh_chkb1. JZghf_jghb ijyfhebg_cghbebihdhblky 10.2. G_l3. L_hjby :jbklhl_ey aZdexqZxsZykylhf qlh ijb hlkmlklbbg_rg_]hha^_cklbyl_ehfh`_llhevdhihdhblvky4. L_f qlh ih =Zebe_x l_eZ fh]ml jZghf_jgh ^b]Zlvky hlkmlklbbg_rgbokbe5. Hiul bah[jZ`_gguc gZ jbkmq_[gbdZ ^hdZauZ_l lh qlhihfbfh bg_jpbZevguo kbkl_f hlkq_lZdhlhjuo uihegy_lkyi_juc aZdhg GvxlhgZ 16. kms_klmxl kbkl_fu bgh]h oZjZdl_jZ Hg 9 17. khklhblke_^mxs_f GZ l_e_`d_ h^bg rZjbd e_`bl gZ]hjbahglZevghc ih_joghklb Z lhjhc ih^_rbZ_lky gZ gblbKgZqZeZ l_e_`dZ ^b`_lky ijyfhebg_cgh b jZghf_jgh bwlhfkemqZ_ h[Z rZjbdZ gZoh^ylkyihdh_ hlghkbl_evgh l_e_`db Klhbllhevdh ijb^Zlv l_e_`d_ mkdhj_gb_ eb[h __ ijblhjfhablv eb[hih^lhedgmlv 18. dZd rZjbdb ijb^ml^b`_gb_ k mkdhj_gb_fhlghkbl_evghl_e_`dbLZdbfh[jZahfhlghkbl_evghl_e_`dbi_jucaZdhgGvxlhgZg_uihegy_lky6. Kms_klmxl kbkl_fu hlkq_lZ hlghkbl_evgh dhlhjuo l_eZkhojZgyxl khx kdhjhklv g_baf_gghc _keb gZ gbo g_ ^_cklmxlg_rgb_ kbeu beb bo ^_cklb_ kdhfi_gkbjhZgh LZdb_ kbkl_fugZauZxlkybg_jpbZevgufb7. Bg_jpbZevgu_kbkl_fum^he_lhjyxli_jhfmaZdhgmGvxlhgZg_bg_jpbZevgu_g_l8. Fh`gh9. G_l 11.1. Ijbeh`_ggZyd l_emkbeZ2. Q_f [hevr_ fhsghklv Zlhfh[bey Z khhl_lkl_ggh _]h kbeZly]bl_f[uklj__hgm_ebqbZ_lkhxkdhjhklv3. Hiul bah[jZ`_gguc gZ jbkmq_[gbdZ ^hdZauZ_l lh qlhijbeh`_ggZy d l_em kbeZ yey_lky ijbqbghc mkdhj_gby eyijh_^_gby^Zggh]hhiulZgZ^haylvl_e_`dmmklZghblvgZg_c^Zh^bgZdhhjZ[hlZxsbo_glbeylhjZb dZi_evgbpmeydhfi_gkZpbbkbeulj_gbyijbdj_ibfd l_e_`d_h^bgbadhgphgblbi_j_dbgmlhcq_j_a [ehd Z d ^jm]hfm dhgpm gblb ih^_kbf ]jma AZl_f hldjh_fdjZg dZi_evgbpu b dexqbf h[Z _glbeylhjZ Ih^ ^_cklb_f kbeu_glbeylhjh l_e_`dZ ijb^_l^b`_gb_ Ijb wlhf gZ klhe [m^mliZ^Zlv dZieb q_j_a h^bgZdhu_ ijhf_`mldb j_f_gb L_i_jv _kebbaf_jylvjZkklhygbyf_`^mkhk_^gbfbdZieyfblhfh`ghm[_^blvkyqlh wlb jZkklhygby [m^ml hlghkblvky dZd jy^ ihke_^hZl_evguog_q_lguo qbk_e LZdbf h[jZahf fh`gh aZdexqblv qlh l_e_`dZ^b]ZeZkvjZghmkdhj_gghkf 19. IhkqblZ_fmkdhj_gb_ihnhjfme_a = 2aZf_jb ijhc^_ggh_ l_e_`dhc jZkklhygb_ s b j_fy __2s^b`_gby t ?keb mf_gvrblv kbem ^_cklmxsmx gZ l_e_`dm^Z tjZaZ udexq_gb_f h^gh]h ba _glbeylhjh 20. b kghZ ihkqblZlvmkdhj_gb_ lh hgh ihemqblky^Z jZaZ f_gvrbf q_f i_juc jZa?keb l_i_jv m_ebqblv fZkkm l_e_`db^Z jZaZ ^h[Ze_gb_f dl_e_`d_ ]jmaZ fZkkhc jZghc fZkk_ l_e_`db 21. b kghZ ihkqblZlv 10 22. mkdhj_gb_ lh hgh ihemqblky^Z jZaZ f_gvrbf q_f i_juc jZaLZdbf h[jZahf aZdexqZ_f qlh mkdhj_gb_ l_e_`db ijyfhijhihjpbhgZevgh ijbeh`_gghc d g_c kbe_ b h[jZlghijhihjpbhgZevgh__ fZkk_4. Mkdhj_gb_ l_eZ ijyfh ijhihjpbhgZevgh jZgh^_cklmxs_cijbeh`_gguo d g_fm kbe b h[jZlgh ijhihjpbhgZevgh _]h fZkk_ 7 7 Fa= . d] fm5. HgbkhgZijZe_gu6. G 1 2 .k 12.1. Hiulubah[jZ`_ggu_gZjbkmq_[gbdZih^l_j`^Zxllj_lbc aZdhg GvxlhgZ h k_o wlbo hiulZo ijb ihfhsb ^mo^bgZfhf_ljh baf_jyxlky kbeu k dhlhjufb ^Z l_eZ ^_cklmxl^jm]gZ^jm]Z i_jhfhiul_aZbfh^_cklb_l_eijhbkoh^blijbbo g_ihkj_^kl_gghf dhglZdl_ h lhjhf gZ jZkklhygbb lj_lv_f ijhp_kk_ ^b`_gby Ijb wlhfdZ`^hf kemqZ_ihdZaZgby ^bgZfhf_ljh hdZauZxlky h^bgZdhufb LZdbfh[jZahf fh`gh k^_eZlv uh^ qlh ^Z l_eZ ^_cklmxl ^jm] gZ^jm]Z k kbeZfb jZgufb ih fh^mex b ijhlbhiheh`gufb ihgZijZe_gbx2. Kbeuk dhlhjufbaZbfh^_cklmxl^Zl_eZjZguihfh^mexbijhlbhiheh`guihgZijZe_gbx3. Wlhmkdhj_gb_b^m[hevrhcfZkkuA_febij_g_[j_`bl_evghfZeh4. GZijbf_j Khegp_ b EmgZ aZbfh^_cklmxl ihkj_^klhf]jZblZpbhgguokbe5. Wlbkbeuijbeh`_gud jZagufl_eZf1. b`_gb_ih^^_cklb_fkbeuly`_klb 13.2. GZ^h baf_jblv jZkklhygby dhlhju_ rZjbd ijhoh^bl aZihke_^hZl_evgu_ h^bgZdhu_ ijhf_`mldb j_f_gb b m[_^blvky lhf qlh ^Zggu_ jZkklhygby hlghkylky dZd jy^ ihke_^hZl_evguog_q_lguo qbk_e Wlh b [m^_l yeylvky ^hdZaZl_evklhf lh]h qlhkh[h^gh_iZ^_gb_l_eZyey_lkyjZghmkdhj_gguf^b`_gb_fkf3. K p_evx ihdZaZlv qlh mkdhj_gb_ kh[h^gh]h iZ^_gby h^bgZdhh8).^eyk_ol_e4. Mkdhj_gb_uaZggh_^_cklb_fkbeuly`_klb5. BaaZkbeukhijhlbe_gbyha^moZ 11 23. 6. =Zebe_c14.1. ZhgZij_iylklm_l_]hih^t_fm2. K mkdhj_gb_f g Ijb ^b`_gbb l_eZ _jo _]h kdhjhklvmf_gvrZ_lky ih aZdhgm v(t) = v0 gt_jog_c lhqdb ljZ_dlhjbbkdhjhklv l_eZ jZgZ gmex b hgh gZqbgZ_l ^b]Zlvky gbam_ebqbZykdhjhklvihaZdhgmv(t) = gt^hl_oihjihdZg_ miZ^_lgZa_fex3. Hl_ebqbgugZqZevghckdhjhklb4. ?keb gZijZblv hkv _jo lh ijh_dpby _dlhjZ kdhjhklb gZ wlmhkv iheh`bl_evgZ Z ijh_dpby mkdhj_gby kh[h^gh]h iZ^_gby hljbpZl_evgZ15.1. aZbfgh_ ijbly`_gb_ k_o l_e k_e_gghc ]jZblZpbhggh_aZbfh^_cklb_l_e 24. 2. =jZblZpbhggufb3. BkZZdGvxlhg ;9,,_d_4. Z l_eZ ijbly]bZxlky ^jm] d ^jm]m k kbehc ijyfhijhihjpbhgZevghc ijhba_^_gbx bo fZkk bh[jZlghijhihjpbhgZevghcdZ^jZlmjZkklhygbyf_`^mgbfb5. F = G 1 2 2]^_ F fh^mev ]jZblZpbhgghc kbeu m1, m2 mmfZkku aZbfh^_cklmxsbo l_e r jZkklhygb_ f_`^m gbfb G r]jZblZpbhggZyihklhyggZyjZgZy 10-11 Gf2d]2.6. AZdhgk_fbjgh]hly]hl_gbykijZ_^eb ke_^mxsbokemqZyo 25. ^ey^mol_ejZaf_judhlhjuoij_g_[j_`bfhfZeuk jZkklhygb_frf_`^mgbfb 26. _kebh^ghbal_ebf__lnhjfmrZjZjZ^bmkb fZkkZdhlhjh]h h fgh]h jZa [hevr_ q_f m lhjh]h l_eZ ijhbahevghcnhjfu 27. ^ey ^mo h^ghjh^guo l_e rZjhh[jZaghc nhjfu ijbex[uobojZaf_jZo7. Z1. _jgh 2. Mf_gvrZ_lky3. Fl = mg.16.4. KbeZly`_klb[hevr_gZ ihexkZoldA_fey g_fgh]hkiexkgmlZm ihexkh5. Hghijb[ebabl_evgh jZaf_gvr_a_fgh]h12 28. 1. RZjbd ^b`_lky hl lhqdb : d lhqd_ih^ ^_cklb_f kbeu18. 7mijm]hklb FWlZ kbeZ hagbdeZj_amevlZl_ jZkly`_gby rgmjZKdhjhklv mkdhj_gb_ rZjbdZ b ^_cklmxsZy gZ g_]h kbeZgZijZe_gu hl lhqdb A d lhqd_ B RZjbd ^b`_lky ijyfhebg_cghl__]hljZ_dlhjbyijyfZyebgby2. KbeZmijm]hklb rgmj_hagbdeZ j_amevlZl__]hjZkly`_gbybhgZgZijZe_gZd lhqd_OKdhjhklvrZjbdZb ^_cklmxsZygZg_]hkbeZ gZijZe_gu ih ijyfuf i_j_k_dZxsbfky ih^ m]ehf4 .LjZ_dlhjby rZjbdZ ij_^klZey_l kh[hc hdjm`ghklv l_ rZjbd^b`_lkydjbhebg_cgh3. ?keb kdhjhklv l_eZ b ^_cklmxsZy gZ g_]h kbeZ gZijZe_gu^hev i_j_k_dZxsboky ijyfuo lh l_eh ^b`_lky djbhebg_cgh_keb^hevh^ghcijyfhclhl_eh^b`_lkyijyfhebg_cgh1. Hiulihuk_dZgbxbkdjubalhqbevgh]hdZfgy19.2. Mkdhj_gb_ gZijZe_gh ih jZ^bmkm d p_gljm hdjm`ghklb b hghgZauZ_lkyp_gljhklj_fbl_evguf3. Ihnhjfme_Zp =v2 .4. Ih jZ^bmkm d p_gljm hdjm`ghklb ?_ fh^mev hij_^_ey_lky ih rnhjfme_Fp = mv 2.r20.1. H[jZs_gb_ieZg_lhdjm]KhegpZb kimlgbdhhdjm]ieZg_l2. Ld hg h[eZ^Z_l ^hklZlhqgh [hevrhc kdhjhklvx gZijZe_gghcihdZkZl_evghcd ljZ_dlhjbb^b`_gby3. Z ld lZdh_ ^b`_gb_ ijhbkoh^bl lhevdh ih^ ^_cklb_f kbeuly`_klb4. Khh[sblv_fmi_jmxdhkfbq_kdmxkdhjhklv5. Zp = ; v 2 = gr v = gr . IheZ]Zyr RAlhihemqZ_fv2 v2 ;g= rrqlh v = gRA dfk6. Ihweebilbq_kdhchj[...