fizika 7 yechim

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Yangilangan May 2026

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1-mashk 1. 18-rasmdagi odam, velosiped, avtomobil, poezd va samolyotni tezliklarini m/sek ga aylantiring echish: 1 km=1000 m , 1 soat = 60 min = 60*60 sek = 3600 sek bulgani uchun vo=4.5 km/soat =4.5 *1000m /3600 sek = 1.25 m/sek. vv=30 km/soat = 30 *1000m /3600 sek = 8.33 m/sek. va=90 km/soat = 90 *1000m /3600 sek = 25 m/sek. vp=150 km/soat =150*1000m /3600 sek = 42 m/sek. vs=900 km/soat =900*1000m /3600 sek = 250 m/sek. 2. tezliklarni km/soatga aylantiring: 2 m/sek, 5 m/sek, 15 m/sek, 25 m/sek, 40 m/sek echish: kmm 1000 1 1  , soatsek 3600 1 1  bulgani uchun soat km soat km sek m 2.7 3600 1000 1 22  , soat km soat km sek m 18 3600 1000 1 55  soat km soat km sek m 54 3600 1000 1 1515  , soat km soat km sek m 90 3600 …

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rakatdagi tezlik formulasi t s v dan vaktni topsak v s t  . demak, minminsek m/sek m t 10 60 1 *600 600 10 6000  2-mashk 1. jism notekis xarakat kilib, 2 min da 60 m masofani bosib utdi. uning urtacha tezligi necha m/sek buladi ? berilgan: t = 2 min = 120 sek s = 60 m ?vur  echish: notekis xarakatda urtacha tezlik – bosib utilgan barcha yulni ketgan barcha vaktga nisbati bilan aniklanadi t s ur v . demak, sek m sek m ur 5.0 120 60 v  2. toshkentdan soat 730 da yulga chikkan neksiya 270 km yul bosib, soat 1030 da fargonaga etib keldi. neksiyaning urtacha tezligini toping. berilgan: t = 1030 - 730 = 3 soat s = 270 km ?vur  echish: notekis xarakatda urtacha tezlik t s ur v . demak, soat m soat m ur k 90 3 …

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chan xarakatdagi tezlanishini toping. berilgan: v10= 0 m/sek tezlanuvchan xarakatdagi boshlangich tezlik v1 = 18 km/soat=5 m/sek tezlanuvchan xarakatdagi oxirgi tezlik t1 = 10 sek tezlanuvchan xarakat vakti v20= 18 m/sek sekinlanuvchan xarakatdagi boshlangich tezlik v2 = 0 m/sek sekinlanuvchan xarakatdagi oxirgi tezlik t2 = 5 sek sekinlanuvchan xarakat vakti ? ,? 21  aa echish: tekis tezlanuvchan xarakatda tezlanish 1 101 1 v-v t a  . demak, 21 5.0 01 / 0)-(5 sek m sek sekm a  . tekis sekinlanuvchan xarakatda tezlanish 2 202 2 v-v t a  . demak, 22 1 5 / 5)-(0 sek m sek sekm a  3. tekis tezlanuvchan xarakat kilayotgan neksiya 25 sek davomida tezligini 45km/soat dan 90 km/soat ga oshirdi. neksiyani tezlanishini toping. berilgan: t = 25 sek v0 = 45 km/soat=45000/3600 m/sek=12.5 m/sek v = 90 km/soat=90000/3600m/sek=25 m/sek a=? echish: tekis sekinlanuvchan xarakatda tezlanish t a 0v-v  …

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4 m/sek2 bilan tekis tezlanuvchan xarakat kilib 30 sek da kanday tezlikka erishadi ? berilgan: v0 = 3 m/sek a = 0.4 m/sek2 t = 30 sek ?v  echish: tekis tezlanuvchan xarakatda tezlanish t a 0v-v  . bundan oxirgi tezlikni topsak at 0 v v . demak sekm / 1530 *4.0 3 v  3. boshlangich tezligi 30 km/soat bulgan tiko 1 m/sek2 tezlanish bilan tekis tezlanuvchan xarakat kilib 15 sek da kanday tezlikka erishadi ? berilgan: v0 = 30 km/soat = 30*1000/3600 m/sek = 8.3 m/sek a = 1 m/sek2 t = 15 sek ?v  echish: tekis tezlanuvchan xarakatda tezlanish t a 0v-v  . bundan oxirgi tezlikni topsak at 0 v v . demak sekm / 3.2315 *1 8.3 v  . agar, m/sek ni km/soat larda ifodalasak soat km soat km soat km sek m 6.3 1000 3600 1 1 3600 1 1000 1 …

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= 84 km/soat ?v ur echish: tekis tezlanuvchan xarakatda urtacha tezlik 2 vv v 0  . demak, soat km soat km soat km 102 2 204 2 48120 2 vv v 0      5-mashk 1. joyidan kuzgalib, 0.3 m/sek2 tezlanish bilan tekis tezlanuvchan xarakat kilayotgan jism 10 sek da kancha yul bosadi ? berilgan: v0 = 0 m/sek a = 0.3 m/sek2 t = 10 sek ?s  echish: tekis tezlanuvchan xarakatda bosib utilgan yul 2 v 2at ts 0  . demak, mmetr at s 15 2 01 3.0 2 22    2. boshlangich tezligi 30 km/soat bulgan avtomobil 0.5 m/sek2 tezlanish bilan tekis tezlanuvchan xarakat kilib 1 min da kancha yul bosib utadi ? berilgan: v0 = 30 km/soat =30 000/3600 m/sek = 8.33 m/sek a = 0.5 m/sek2 t =1 min = 60 sek ?s  echish: tekis tezlanuvchan xarakatda …

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1-mashk 1. 18-rasmdagi odam, velosiped, avtomobil, poezd va samolyotni tezliklarini m/sek ga aylantiring echish: 1 km=1000 m , 1 soat = 60 min = 60*60 sek = 3600 sek bulgani uchun vo=4.5 km/soat =4.5 *1000m /3600 sek = 1.25 m/sek. vv=30 km/soat = 30 *1000m /3600 sek = 8.33 m/sek. va=90 km/soat = 90 *1000m /3600 sek = 25 m/sek. vp=150 km/soat =150*1000m /3600 sek = 42 m/sek. vs=900 km/soat =900*1000m /3600 sek = 250 m/sek. 2. tezliklarni km/soatga aylantiring: 2 m/sek, 5 m/sek, 15 m/sek, 25 m/sek, 40 m/sek echish: kmm 1000 1 1  , soatsek 3600 1 1  bulgani uchun soat km soat km sek m 2.7 3600 1000 1 22  , soat km soat …

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