Uzunligi 200 m bo'lgan poezd parallel yo'lda 18 km/soat tezlik bilan ketayotgan velosipedchini 10 s da quvib o'tgan bo'lsa, poezdning tezligi necha m/s ga teng?

  1. 20
  2. 22,5
  3. 25
  4. 27,5

📝 Detailed explanation

Velosipedchining tezligi: v₁ = 18 km/soat = 5 m/s.
Poezd velosipedchini 10 s da quvib o'tdi, ya'ni poezd velosipedchiga nisbatan 200 m masofani bosib o'tdi.
Nisbiy tezlik: v_nis = L/t = 200/10 = 20 m/s.
Poezd va velosipedchi bir yo'nalishda harakat qilgani uchun:
v_poezd = v_nis + v₁ = 20 + 5 = 25 m/s.
Javob: C) 25.
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