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Jism Impulsi

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Quyidagilarning qaysi biri jism impulsini ifodalaydi?

a)

𝑚𝑎

b)

𝑚𝑣

c)

𝐹𝛥𝑡

d)

𝑚𝛥t

e)

𝑚𝑣2/2

2.

3 m/s tezlik bilan yugurayotgan 60 kg massali bolaning impulsi (kg·m/s) qanday?

a)

180

b)

20

c)

80

d)

120

e)

90

3.

1,2 t massali avtomobil 5 m/s tezlik bilan harakatlanmoqda. Uning impulsini (kg·m/s) toping.

a)

4000

b)

2400

c)

5000

d)

6000

e)

1000

4.

Massasi 50 g va impulsi 40 kg∙m/s bo‘lgan yuqori kalibrli o‘qning tezligini toping (m/s).

a)

1800

b)

2000

c)

800

d)

2200

e)

1200

5.

Agar jismning massasi 3 marta ortib, tezligi esa 2 marta kamaysa, uning impulsi qanday o‘zgaradi?

a)

1,5 marta kamayadi

b)

1,5 marta ortadi

c)

3 marta ortadi

d)

6 marta ortadi

6.

Jism impulsining halqaro birliklar sistemasidagi birligi qanday nomlanadi?

a)

nyuton

b)

Joul

c)

kg∙m/s (Nyuton·sekund)

d)

nyuton/sekund

e)

Joul/sekund

7.

Jismga 15 N kuch 5 s davomida ta’sir etadi. Jism impulsining o‘zgarishi (kg·m/s) qanday?

(Jism impulsining o'zgarishi kuch impulsiga teng)

a)

15

b)

75

c)

150

d)

3

8.

2 kg massali sharcha vertikal devorga rasmdagi kabi 3 m/s tezlik bilan kelib urildi va undan 5 m/s tezlik bilan qaytdi. Urilishdagi kuch impulsini aniqlang(N∙s).

a)

6

b)

10

c)

16

d)

4

9.

Massasi 500 g bo‘lgan futbol to‘pi futbolchi oyog‘iga 10 m/s tezlik bilan urilib 20 m/s tezlik bilan qaytgan. Agar zarb davomiyligi 0,3 s bo‘lsa, zarb kuchini toping(N).

a)

10

b)

35

c)

40

d)

50

10.

0,3 m/s tezlik bilan harakatlanayotgan 80 kg massali aravachaga 20 kg yuk qo‘yildi (yukning tezligi NOL ga teng edi). Bunda aravacha tezligi qanchaga teng bo'ladi (m/s)?

Note: Noelastik to'qnashuvda impulsning saqlanish qonuni: m1v1+m2v2=(m1+m2)um_1v_1+m_2v_2=\left(m_1+m_2\right)\cdot u

a)

0.2

b)

0.24

c)

0.3

d)

6