1. Into engamagremu angu -500 , u-A, ehamba ngesivinini esingu- 10 m/s kanye nento engamagremu angu-200, u-B, ehamba ngesivinini esingu-12 m/s. Izinto ziyasondelana bese zishayisana. Uma ijubane lento A ngemva kokushayisana lingu -6 m/s, liyini ijubane lento B ngemva kokushayisana?
Kwaziwa:
Isisindo sento 1 (m 1 ) = 500 amagremu = 0.5 kg
Isisindo sento 2 (m 2 ) = 200 amagremu = 0.2 kg
Ijubane lokuqala lento 1 (v 1 ) = -10 m/s
Ijubane lokuqala lento 2 (v 2 ) = 12 m/s
Ijubane lokugcina lento 1 (v 1 ') = 6 m/s
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
Okufunwayo : ijubane lokugcina lento 2 (v 2 ')
Isixazululo:
m1 v1 +m2 v2 = m1 v1' + m2 v2'
(0.5)(-10) + (0.2)(12) = (0.5)(6) + (0.2)(v 2 ')
-5 + 2.4 = 3 + 0.2 v 2 '
-2.6 = 3 + 0.2 v 2 '
-2.6 – 3 = 0.2 v 2 '
-5.6 = 0.2 v 2 '
v 2 ' = -5.6 / 0.2
v 2 ' = -28 m/s
Ijubane lento 2 ngemva kokushayisana lingama-28 m/s.
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
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2. Izinto ezimbili ezilingana ngobuningi ziyasondelana bese zishayisana. Ijubane lento 1 lingu-6 m/s kanti ijubane lento 2 lingu-8 m/s. Ngemva kokushayisana, into 2 iya ngakwesobunxele ngejubane elingu-5 m/s. Iyini ubukhulu kanye nesiqondiso sejubane lento 1 ngemva kokushayisana?
Yazi:
Isisindo sento 1 (m 1 ) = m
Isisindo sento 2 (m 2 ) = m
Isivinini sokuqala sento 1 (v 1 ) = -6 m/s
isivinini sokuqala sento 2 (v 2 ) = 8 m/s
Isivinini sokugcina sento 2 (v 2 ') = -5 m/s
Okufunwayo : ubukhulu kanye nesiqondiso sento 1 ngemva kokushayisana
Isixazululo:
Ifomula yokulondolozwa komfutho oqondile :
m1 v1 +m2 v2 = m1 v1' + m2 v2'
mv 1 + m v 2 = m v 1 ' + m v 2 '
m (v 1 + v 2 ) = m (v 1 ' + v 2 ')
v 1 + v 2 = v 1 ' + v 2 '
-6 + 8 = v 1 ' – 5
2 = v 1 ' – 5
2 + 5 = v 1 '
v 1 ' = 7 m/s
Ijubane lento 1 ngemva kokushayisana (v 1 ') lingu- 3 m/s.
Izimpawu zokuhlanganisa kanye nokususa zibonisa ukuthi izinto zihamba ngendlela ehlukile.
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3. Ibhola elingu-1 kg eliyi-1 kanye nebhola elingu-2 kg lihamba ngendlela efanayo futhi lishayisana ngendlela engaguquki. Ngaphambi kokushayisana, ibhola elingu-1 lihamba ngesivinini esingu-10 m/s kanti ibhola elingu-2 lihamba ngesivinini esingu-5 m/s. Isivinini sebhola elingu-2 ngemva kokushayisana singama-4 m/s. Thola isivinini sebhola elingu-1 ngemva kokushayisana.
Kwaziwa:
Ibhola elisindayo 1 (m1 ) = 1 kg
Ibhola elisindayo 2 (m2 ) = 2 kg
Isivinini sebhola 1 (v 1 ) = 10 m/s
Isivinini sebhola 2 (v 2 ) = 5 m/s
Isivinini sokugcina sebhola 2 (v 2 ') = 4 m/s
Isibonakaliso sokuhlanganiswa kwejubane sibonisa ukuthi amabhola aqonde ohlangothini olufanayo.
Okufunwayo : ijubane lokugcina lebhola 1 (v 1 ')
Isixazululo:
m1 v1 +m2 v2 = m1 v1' + m2 v2'
(1)(10) + (2)(5) = (1)(v 1 ') + (2)(4)
10 + 10 = v 1 ' + 8
20 – 8 = v 1 '
v 1 ' = 12 m/s
Ijubane lebhola 1 ngemva kokushayisana liyi- 12 m/s.
[wpdm_package id='1190′]
- 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
