Berilgan: Formula;
g =0,001 kg p1=m1*v
m2=100 g =0,1 kg p2=m*v v=10 m/s
topish kerak
p1=? ,p2=?
Hisoblash
P1=0,001 kg*10m/s=0,1 kg/m*s
P 2=0,1*10 m/s=1 kg/m*s
3. Massasi 2 kg bo`lgan jism 5 m/s tezlikda kelib devorga urildi.vao`z tezligini butkul yo`qotdi jismning ta`sir kuchi impulsini toping.
Berilgan; Formula;
m=2 kg p=m*v
v=5 m/s
topish kerak
p=?
Hisoblash:
P=m*v=2 kg*5m/s=10kg*m/s
Javob: p= 10 kg*m/s
VI.Mustahkamlash.
1. Qanday fizik kattalik inertlikni harakaterlaydi?
a) tezlik; v) tezlanish; s) kuch; d) zichlik; e) massa.
2. Massasi 3 kg bo'lgan jism 4 m/s tezlik bilan harakatlanaetganda, uning kinetik energiyasi nimaga teng?
a) 6 j b) 12 j c) 48 j d) 24 j e) 2?4 j.
3. 0,4 m/s2 tezlanish bilan harakatlanaetgan avtomobilning tezligi qancha vaqtdan keyin 12 dan 20 m/s qancha ortadi?
a) 20 s b) 12 s c) 0,4 s d) 10 s e) 40 s.
4) 2N kuch ta'sirida 42 m ga uzaygan prujinaning birligini toping?
a) 20 N/m b) 30 N /m c) 40 N/m d) 60 N/m
e) 50 N/m.
5) Quyidagi fizik kattaliklarni qaysilari vektor kattalik? Massa, tezlik, kuch, tezlanish, vaqt.
a) massa, vaqt, tezlik; v) tezlik va tezlanish; s) kuch va massa;
d) tezlik, kuch, tezlanish; e) kuch va massa.
VII.Uyga vazifa:
33-darsni o`rganish , 5 ta test tuzish ,19-mashqni 4-masalasini yechish.
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