⚛️ Fizika · Dinamika · ★★★
Yer sirtidan qanday balandlikda erkin tushish tezlanishi Yer sirtidagidan 9 marta kichik bo'ladi? (Yer radiusi R = 6400 km)
- A)6400 km
- B)19 200 km
- C)25 600 km
- D)12 800 km
👀 To'g'ri javob va tushuntirishni ko'rish
✓ D) 12 800 km
💡 g ~ 1/(R + h)², 9 marta kamayishi uchun R + h = 3R, demak h = 2R = 12 800 km.