Buxoro davlat universiteti




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2.1.3-masala.Passajir va yuk poyezdi bir-biriga tomon harakatlanmoqda. Ular orasidagi masofa 275 km.Yuk poyezdining tezligi 50 km/soat. Passajir poyezdining tezligi yuk poyezdining tezligidan 20% ortiq.Ular necha soatdan keyin uchrashadi?

A)3 B)2 C)2,5 D)4



Yechish:Orasidagi masofa S=50km/soat. Passajir poyezdining tezligi V1, yuk poyezning tezligi V2 =50km/soat ga teng bo`lsin.Masala shartiga ko`ra V1=1,2V2 ga teng ekan. Bundan kelib chiqadiki V1=1,2*50=60 km/soat ga teng.Ularning uchrashish vaqt (2.1.1) formulaga asosan soat .Javob:C

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