Fizika dan masala !

Question

Poezd yolda 30 min toxtab qoldi . poezd jadval boyicha etib kelishi uchun mashinist 80 km masofada 8km/soatga oshirdi. Poezd jadval boyicha qanday tezlik bilan yurishi kerak edi ?

Comments

javobi 32 chiqishi kerak lekin menda chiqmayapti

Answer 1

http://img.uz/d/2017/06/595018ffe74e7.jpg

Comments

mana shunday yechiladi

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yoq bu korinmayapti aniqroq qilib korsating !

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xop, hozir

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sifatliroq rasmga tushiraman

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[URL=[/IMG][/URL]" rel="nofollow" target="_blank">http://img.uz/][IMG][/IMG][/URL]

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izohga hojat yo'q bo'lsa kerak, tenglamalarni ma'nosini chiqarish qiyin emas

Answer 2

30min=0.5soat
80*0.5=40
40-8=32
Javob: 32 km/soat

Comments

formullar bilan korsating iltimos !!!

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S=80
t2=t1-0.5
v2=v1+8
s=vt
t1=s/v1
t1-0.5=s/v1+8 >> t1=s/(v1+8)+0.5
s/v1=s/(v1+8)+1/2
qolgani http://qanday-qilib.uz/user/Jahongir+Buyuk ning hisoblashi.
Bo'ldi.