Rajah menunjukkan pergerakan sebiji bola boling dan sebuah pin boling sebelum dan selepas perlanggaran.
Table shows the momentum of the bowling ball and the bowling pin before and after the collision.
Jadual menunjukkan momentum bola boling dan pin boling sebelum dan selepas perlanggaran.
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Momentum
before collision
Momentum sebelum perlanggaran
(Kgms-1)
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Momentum
after collision
Momentum selepas perlanggaran
(Kgms-1)
|
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Boling ball
Bola
boling
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Bowling pin
Pin
boling
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Boling ball
Bola
boling
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Bowling pin
Pin
boling
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2.5
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0.0
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0.4
|
2.1
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Apakah maksud momentum?
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(b) Based on Diagram and Table, determine the total momentum of the bowling ball and the bowling pin.
Berdasarkan Rajah dan Jadual, tentukan jumlah momentum bola boling dan pin boling.
(i) Before the collision
Sebelum perlanggaran
(ii) After collision
Selepas perlanggaran
(c) Compare the answer in (b)(i) and (b)(ii)
Bandingkan jawapan di (b)(i) dan (b)(ii)
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(d)(i) Based on the answers in (b) and (c), state a conclusion about the total momentum.
Berdasarkan jawapan (b) dan (c) , nyatakan satu kesimpulan tentang jumlah momentum.
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(ii) Name the physics principle involved in (d)(i)
Namakan prinsip fizik yang terlibat dalam (d)(i)
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(iii) State one condition needed in order to apply the physics principle state in (d)(ii)
Nyatakan satu syarat yang diperlukan untuk mengaplikasikan prinsip fizik yang dinyatakan dalam (d)(ii).
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(e)Total kinetic energy of the bowling ball and the bowling pin after the collision decreases. What type of collision is this?
Jumlah tenaga kinetik bola baling dan pin boling selepas perlanggaran berkurang .
Apakah jenis perlanggaran ini?
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Answer :
Momentum is product of mass and velocity
Momentum adalah hasil darab jisim dengan halaju
P=m1u1+m2u2
=2.5+0
=2.5 Kgms-1
P=0.4+2.1
=2.5 Kgms-
Same
Total momentum before collision is equal to the momentum after collision
Jumlah momentum sebelum perlanggaran adalah sama dengan jumlah momentum selepas perlanggaran
Principle of conservation of momentum
Prinsip keabadian Momentum
No external force acts on the system
Tiada daya luar bertindah ke atas sistem
Inelastic collision
Perlanggaran tak kenyal