Erkin tushish mavzusida test

Erkin tushish mavzusida test

1. Erkin tushayotgan jism 7 m/s boshlang‘ich tezlikka ega bo‘lsa, u 2 s dan keyin qanday tezlikka (m/s) erishadi? g=9,8 m/s² .
A) 14. B) 28. C) 19,6. D) 26,6.
2. 20 m/s ga teng boshlang‘ich tezlik bilan erkin tushayotgan jismning harakat boshidan 5 s o‘tgan paytdagi tezligi qanday (m/s) bo‘ladi?
A) 4. В) 20. C) 50. D) 70.
3. Erkin tushayotgan jism harakatining boshlang‘ich 3 sekundida necha metr ko‘chadi? g=10 m/s². A)60. B)75. C)50. D)45. E)65.
4. Erkin tushayotgan jism 7-sekundda qanday masofani o‘tadi (m)?g=10 m/s².
A)49. B)245. C)70. D)65
5. Erkin tushishning 3-sekundida o‘tilgan yo‘lning 4-sekundda o‘tilgan yo‘lga nisbati qanday?
A)3:4. B) 9:16. C)43:2. D)5:9. E)5:7.
6. Boshlang‘ich tezliksiz erkin tushayotgan jism oxirgi 35 metrni 1 s davomida o‘tdi. Tushish balandligi qanday (m).
A) 80. B) 120. C) 150. D) 135. E) 195.
7. Jism h=45 m balandlikdan erkin tushmoqda. Uning tezligi 10 m/s ga yetganda u yerdan qanday (m) balandlikda bo`ladi? g=10 m/s².
A) 20. B) 25. C) 30. D) 35. E) 40.
8. Jism 50 m/s tezlik bilan vertikal yuqoriga otildi.Jismning maksimal ko‘tarilish balandligi qanday (m)?
A) 25. B) 50. C) 125. D) 250. E) 500.
9. Jism 40 m/s tezlik bilan yuqoriga tik otildi. Necha sekunddan so‘ng uning tezligi (modul jihatidan) boshlang‘ich tezlikdan 4 marta kichik bo`ladi? A) 3 va 5. B) faqat 4. C) faqat 5.
D) 3 va 4. E) faqat 3.
10. Jism 40 m/s tezlik bilan yuqoriga tik otilgan. U 2s da necha metr balandlikka erishadi. Havoning qarshiligini hisobga olmang.
A) 80. B) 60. C) 800. D) 0,8.
11. Mashina dovonga ko‘tarilishda 15 m/s, tushishda 20 m/s tezlik bilan harakatlandi. Tushish yo‘li chiqish yo‘lidan 2 marta uzun bo‘lsa, mashinaning butun yo‘l davomidagi o‘rtacha tezligi necha m/s bo‘lgan?
A) 15. B) 16. C) 17,5. D) 18. E) 20.
12. To‘g‘ri chiziqli harakat qilayotgan jism yo‘lning birinchi yarmini 5 m/s tezlik bilan, ikkinchi yarmini 15 m/s tezlik bilan o‘tdi. Jismning harakat davomidagi o‘rtacha tezligi qanday (m/s) bo‘lgan? A) 7,5. B) 10. C) 6. D) 12,5
13. Shossening burilgan joyida avtomobil modul bo‘yicha o‘zgarmas 10 m/s tezlik bilan
harakatlanmoqda. Agar avtomobil traektoriyasining egrilik radiusi 50 m bo‘lsa, uning markazga intilmatezlanishi qanday (m/s²)? A) 2. B) 0,2. C) 0,5. D) 2,5. E) 25.
14. Moddiy nuqta 10 sekundda 40 marta aylandi. Nuqtaning aylanish davrini toping (s).
A) 0,25 B) 0,2 C) 0,5 D) 0,8
15. Disk aylanish chastotasi 10 ayl/s bo`lsa, uning 2 min dagi aylanishlar sonini toping.
A) 900 B) 1100 C) 1000 D) 1200
16. Velosiped g`ildiragi 0,5 min da 30 marta aylansa, aylanish chastotasi nimaga teng (s^-1)? A)2 B)1,5 C)0,5 D)1
17. Chastotasi 12 ayl/min bo`lgan jismning aylanish davrini toping (s). A) 1 B) 2 C) 4 D) 5
18. Aylana bo`ylab harakatlanayotgan jism 3 s da 270⁰ ga burildi. Jismning burchak tezligini aniqlang (rad/s). A) π/2 B) π C) 3π/2 D) 2π
19. 10 s da 2π rad burchakka burilib aylanayotgan jismning burchak tezligini toping (rad/s). A)π/2 B)π C)3π/2 D)π/5
20. 10 rad/s burchak tezlikda aylanuvchi jismning π sekunddagi burchak ko`chishini aniqlang (rad). A) 5π B) 10π C) π D) 2π
21. Maxovik o`z o`qi atroda 6 ayl/min chastota bilan aylanmoqda. Burchak tezlikni toping (rad/s). A) π/2 B) π C) 3π/2 D) π/5
22. Aylana bo`ylab 100 m masofani 2 s da o`tgan moddiy nuqtaning chiziqli tezligini aniqlang (m/s). A) 50 B) 0,02 C) 100 D) 25
23. Aylana bo`ylab harakatlanuvchi jism 3,14 s da aylananing to`rtdan bir qismini o`tdi. Agar aylana radiusi 4 m bo`lsa, jismning chiziqli tezligini toping (m/s). A) 3 B) 2 C) 1 D) 4
24. 10 rad/s burchak tezlik bilan aylanuvchi jismning aylanish radiusi 100 cm ga teng bo`lsa, uning aylanish tezligini toping (m/s).
A) 25 B) 10 C) 20 D) 15
25. 10 m/s tezlik bilan 5m radiusli aylanada harakatlanuvchi jismning markazga intilma tezlanishini toping (m/s²). A) 25 B) 10 C) 20 D) 15
26. Maxovikning aylanish davri 10 s, radiusi 150 cm bo`lsa, uning eng chekka nuqtalarining markazga intilma tezlanishini toping (m/s²). π ²=10. A) 0,6 B) 6 C) 1 D) 0,8
27. Radiusi 12 cm bo`lgan charx diski 1 minutda 1200 marta aylanmoqda. Charx aylanish o`qidan eng uzoq nuqtasining markazga intilma tezlanishini aniqlang (m/s²). π²=10.
A) 1920 B) 2000 C) 1520 D) 1800