DTM Test Fizika

Question 1

Massa 2 kg bo'lgan jism 3 m/s² tezlanish bilan harakatlanmoqda. Kuch qancha?

Accepted Answer

6 N

Answer

1,5 N

Answer

9 N

Answer

0,67 N

Question 2

45 m balandlikdan tosh tashlanadi. Yerga qancha vaqtda yetadi? (g=10 m/s²)

Accepted Answer

3 s

Answer

4,5 s

Answer

9 s

Answer

6 s

Question 3

5 kg jismga 20 N kuch, μ=0,2. Tezlanish? (g=10)

Accepted Answer

2 m/s²

Answer

4 m/s²

Answer

1 m/s²

Answer

3 m/s²

Question 4

72 km/soat — bu necha m/s?

Accepted Answer

20 m/s

Answer

25 m/s

Answer

18 m/s

Answer

72 m/s

Question 5

4 kg jism 5 m ko'tarildi. Potensial energiya? (g=10)

Accepted Answer

200 J

Answer

400 J

Answer

100 J

Answer

50 J

Question 6

3 kg, 10 m/s. Kinetik energiya?

Accepted Answer

150 J

Answer

300 J

Answer

30 J

Answer

60 J

Question 7

Gorizontal otilgan jism uchun to'g'ri fikr?

Accepted Answer

Gorizontal tezlik o'zgarmas, vertikal ortib boradi

Answer

Ikkala o'zgarmas

Answer

Gorizontal kamayib, vertikal ortadi

Answer

Ikkala ortadi

Question 8

Impuls nima va birligi?

Accepted Answer

Massa va tezlik ko'paytmasi; kg·m/s

Answer

Kuch va vaqt; N·m

Answer

Massa va tezlanish; kg·m/s²

Answer

Kuch va masofa; J

Question 9

k=500 N/m prujina x=0,1 m cho'zildi. Energiya?

Accepted Answer

2,5 J

Answer

5 J

Answer

50 J

Answer

0,25 J

Question 10

Markazga intilma tezlanish formulasi?

Accepted Answer

a = v²/R

Answer

a = vR

Answer

a = v/R

Answer

a = v²R