1. Bara remagiramu makumi matatu richifamba ne30 m/s rinoroverana nebara re1-kg rakamira. Sarudza kumhanya kwebara kana bara nebara zvichibatana nekuda kwekuroverana.
Zvinozivikanwa:
Huremu hwebara (m 1 ) = magiramu 30 = 0.03 kg
Huremu hwebhuroko (m2 ) = 1 kg
Kumhanya kwekutanga kwebara ( v 1 ) = 30 m/s
kumhanya kwekutanga kweblock (v 2 ) = 0 ( block iri pakuzorora )
Zvinodiwa : kumhanya kwebara neblock mushure mekubonderana (v')
Solution:
m 1 v 1 + m 2 v 2 = (m 1 + m 2 ) v'
(0.03)(30) + (1)(0) = (0.03 + 1) v'
0.9 + 0 = 1.03 v'
0.9 = 1,03 v'
v' = 0.9 / 1,03
v' = 0.87 m/s
[irp]
2. Bhora rebhiriyadhi A rine huremu hwe 2 kg richifamba nekumhanya v A = 6 ms −1 rinoroverana zvakananga nebhora B rine huremu hwakaenzana. Kana kuroverana kwacho kusina kusimba zvakakwana, kumhanya kwemabhora maviri aya ndekupi mushure mekuroverana.
Zvinozivikanwa:
Huremu A (m A ) = 2 kg
Huremu B (m B ) = 2 kg
Kumhanya kwekutanga kwebhora A (v A ) = -6 m/s
Kumhanya kwekutanga kwebhora B (v B ) = 4 m/s
Zviratidzo zve "plus" ne "minus" zvinoratidza kuti zvinhu zviri kufamba nenzira yakasiyana.
Zvaidiwa : kumhanya kwemabhora maviri mushure mekuroverana. (v')
Solution:
m A v A + m B v B = (m A ' + m B ) v'
(2)(-6) + (2)(4) = (2 + 2) v'
-12 + 8 = 4 v'
-4 = 4 v'
v' = -4 / 4
v' = -1 m/s
[irp]
3. m1 = 3 kg uye m2 = 4 kg vanoswederana munzira yakasiyana nekumhanya kwe v1 = 10 m/s uye v2 = 12 m/s. Kana kuroverana kwacho kusina kunyatsosimba, mabhora maviri aya anomhanya zvakadii mushure mekuroverana?
Zvinozivikanwa:
Huremu hwechinhu 1 (m1 ) = 3 kg
Huremu hwechinhu 2 (m2 ) = 4 kg
Kumhanya kwechinhu 1 (v 1 ) = -10 m/s
Kumhanya kwechinhu 2 (v 2 ) = 12 m/s
Zvinodiwa : kumhanya mushure mekubonderana (v')
Solution:
m 1 v 1 + m 2 v 2 = (m 1 ' + m 2 ) v'
(3)(-10) + (4)(12) = (3 + 4) v'
-30 + 48 = 7 v'
18 = 7 v'
v' = 18 / 7
v' = 2.6 m/s
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