1. Ibhola elingamagremu angu-200, u-A, elihamba ngesivinini esingama-10 m/s lishaya ibhola elingamagremu angu-200, u-B, lapho liphumule. Liyini ijubane lebhola u-A nebhola u-B ngemva kokushayisana?
Kwaziwa:
Isisindo sebhola A (m A ) = 200 amagremu = 0.2 kg
Isisindo sebhola B (m B ) = 200 amagremu = 0.2 kg
Isivinini sebhola A ngaphambi kokushayisana (v A ) = 10 m/s
Isivinini sebhola B ngaphambi kokushayisana (v B ) = 0
Okufunwayo: isivinini sebhola A (v A ') kanye nesivinini sebhola B (v B ') ngemva kokushayisana
Isixazululo:
v A ' = v B = 0
v B ' = v A = 10 m/s
2. Izinto ezimbili ezilingana ngobuningi ziyasondelana, zishayisane bese zigxumagxuma. Ijubane lesisindo u-A ngaphambi kokushayisana lingu-8 m/s kanti ijubane lesisindo u-B ngaphambi kokushayisana lingu-12 m/s. Ubukhulu kanye nesiqondiso sejubane lesisindo u-A kanye nesisindo u-B ngemva kokushayisana kuyini!
Kwaziwa:
Isisindo A (m A ) = m
Isisindo B (m B ) = m
Isivinini sesisindo A ngaphambi kokushayisana (v A ) = -8 m/s
Isivinini sesisindo B ngaphambi kokushayisana (v B ) = 12 m/s
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
Okufunwayo: ubukhulu kanye nesiqondiso sejubane lesisindo u-A (v A ') kanye nesisindo u-B (v B ') ngemva kokushayisana
Isixazululo:
Ekushayisaneni okunwebeka ngokuphelele, uma izinto zinobunzima obulinganayo khona-ke ijubane lika-A ngemva kokushayisana (v A ') = ijubane lika-B ngaphambi kokushayisana (v B ) kanye nejubane lika-B ngemva kokushayisana (v B ') = ijubane lika-A ngaphambi kokushayisana (v A ).
Uma ngaphambi kokushayisana, u-A uya kwesokudla kanti u-B uya ngakwesobunxele, khona-ke, ngemva kokushayisana, u-A uya ngakwesobunxele kanti u-B uya kwesokudla.
Izinto zinesisindo esilinganayo futhi ukushayisana kunwebeka ngokuphelele ngakho zombili izinto zishintshana ngesivinini.
v A ' = -v B = -12 m/s
v B ' = v A = 8 m/s
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
3. Into engamakhilogremu amabili, u-A, ehamba ngesivinini esingama-10 m/s ishaya ibhola elingamakhilogremu angu-4, u-B, ihamba ngesivinini esingama-20 m/s. Uma ukushayisana kunwebeka ngokuphelele, liyini ijubane lento u-A kanye nento u-B ngemva kokushayisana?
Kwaziwa:
Isisindo A (m A ) = 2 kg
Isisindo B (m B ) = 4 kg
Isivinini sento A ngaphambi kokushayisana (v A ) = 10 m/s
Isivinini sento B ngaphambi kokushayisana (v B ) = 20 m/s
Okufunwayo : isivinini sento A (v A ') kanye nesivinini sento B (v B ') ngemva kokushayisana
Isixazululo :
Ekushayiseni okunwebeka ngokuphelele , uma izinto zinesisindo esilinganayo futhi zisondelana, ijubane lento ngemva kokushayisana libalwa kusetshenziswa le fomula:
Isivinini sento A ngemva kokushayisana:
4. Ukuhamba ngesivinini esingamagremu ayi-100 ngesivinini esingama-20 m/s kushaya ukushayisana kodonga okunwebeka ngokuphelele. Kuyini ubukhulu kanye nesiqondiso sejubane lento ngemva kokushayisana.
Kwaziwa:
Isisindo (m A ) = amagremu ayi-100 = 0.1 kg
Isisindo sodonga (m B ) = okungapheli
Isivinini sobunzima ngaphambi kokushayisana (v A ) = 20 m/s
Isivinini sobunzima ngemva kokushayisana (v B ) = 0
Okufunwayo : ubukhulu kanye nesiqondiso sejubane ngemva kokushayisana
Isixazululo:
Uma u-v B = 0, u-m A omncane kakhulu futhi u-m 2 mkhulu kakhulu khona-ke u-v A ' = -v A kanye no-v 2 ' = 0.
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
5. Amabhola amabili, u-A onesisindo esingu- 2-kg kanye nebhola u-B onesisindo esingu- 5-kg, ngaphambi nangemva kokushayisana aboniswe esithombeni esingezansi. Uma ukushayisana kunwebeka ngokuphelele, lingakanani ijubane lebhola u-A ngaphambi kokushayisana?
Kwaziwa:
Isisindo sebhola A (mA) = 2 kg
Isisindo sebhola B (m B ) = 5 kg
Isivinini sebhola B ngaphambi kokushayisana (v B ) = 2 m/s
Isivinini sebhola A ngemva kokushayisana (v A ') = 5 m/s
Isivinini sebhola B ngemva kokushayisana (v B ') = 4 m/s
Womabili amabhola aya ngakwesokudla ngakho ijubane lawo lisayinwe lihle.
Okufunwayo: Isivinini sebhola A ngaphambi kokushayisana (v A )
Isixazululo:
mA vA +mB vB = mA vA' + mB vB'
2(v A ) + (5)(2) = (2)(5) + (5)(4)
2(v A ) + 10 = 10 + 20
2(v A ) + 10 = 30
2(v A ) = 30 – 10
2(v A ) = 20
v A = 20/2
v A = 10 m/s
6. Izinto A no-B zihamba ngendiza evundlile, njengoba kuboniswe esithombeni esingezansi. Uma ukushayisana kunwebeka ngokuphelele futhi ijubane lento B ngemva kokushayisana lingu- 15 m/s 1 , liyini ijubane lento A ngemva kokushayisana.
Kwaziwa:
Isisindo sento A (mA) = 5 kg
Isisindo sento B (m B ) = 2 kg
Isivinini sento A ngaphambi kokushayisana (v A ) = 12 m/s
Isivinini sento B ngaphambi kokushayisana (v B ) = 10 m/s
Isivinini sento B ngemva kokushayisana (v B ') = 15 m/s
Zombili izinto, ngaphambi nangemva kokushayisana, ziya kwesokudla ukuze ijubane lazo libonakale lihle.
Okufunwayo: Isivinini sento A ngemva kokushayisana (v A ')
Isixazululo:
mA vA +mB vB = mA vA' + mB vB'
(5)(12) + (2)(10) = (5)v A ' + (2) (15)
60 + 20 = (5)v A ' + 30
80 = (5)v A ' + 30
80 – 30 = (5)v A '
50 = (5)v A '
v A ' = 50/5
v A ' = 10 m/s
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- Izinkinga zomugqa wejubane kanye nezixazululo
- Izinkinga zejubane kanye nezixazululo zomfutho
- Ukushayisana okunwebeka ngokuphelele ezinkingeni nezixazululo zobukhulu obubodwa
- Ukushayisana okune-elastic ngokuphelele ezinkingeni nezixazululo zobukhulu obubodwa
- Ukushayisana kwe-inelastic ezinkingeni nezixazululo zobukhulu obubodwa
