Page 372 - MODUL SPEKTRUM FIZIK SPM

Section B / Bahagian B
[20 marks / 20 markah]

Question Answer Remark Marks
Soalan Jawapan Catatan Markah
9(a) Rate of change of velocity - 1
Kadar perubahan halaju
(b)(i) Force in kayak A < in kayak B // vice versa Mark 1
Daya dalam kayak A < dalam kayak B // sebaliknya
(ii) Distance of kayak A < kayak B // vice versa Mark 2
Jarak kayak A < kayak B // sebaliknya
(iii) Acceleration of kayak A < kayak B // vice versa Mark 3 5
Pecutan kayak A < kayak B // sebaliknya
(c)(i) Higher force, larger distance // vice versa Mark 4
Daya tinggi, jarak besar // sebaliknya
(ii) Higher force, higher acceleration // vice versa Mark 5
Daya tinggi, pecutan tinggi // sebaliknya
(d) - (The stone experiences an) acceleration before t = 7s Mark 1
- After t=7 s, there is zero acceleration // constant velocity
- Water resistance / buoyant force acts on the stone Mark 2
- Before t = 7s, upward force < downward force / resistance < weight
- After t=7 s, the upward force = downward force // forces are in
equilibrium Mark 3 Max 4
- (Batu mengalami) pecutan sebelum t = 7 s
- Selepas t = 7 s, pecutan sifar / halaju malar Mark 4
- Rintangan air / daya julangan / apung bertindak ke atas batu
- Sebelum t = 7 s, daya ke atas < daya ke bawah // rintangan < berat
- Selepas t = 7 s, daya ke atas = daya ke bawah // daya seimbang Mark 5
Aspect Suggestion Explanation
Material of boat M1 Low density M2 Light // larger acceleration
Bahan bot Ketumpatan rendah Ringan // pecutan tinggi
M3 Waterproof / M4 Does not increase the mass
Does not absorb water Tidak menambah jisim
Kalis air /
tidak menyerap air
Shape of boat M5 Streamlined M6 Reduces (water) resistance 10
Bentuk bot Larus Mengurangkan rintangan (air)
Size of propeller M7 Large M8 Larger force produced /
Saiz propeller Besar push back more water
Daya lebih besar /
menolak lebih banyak air
Power of engine M9 High M10 Larger force produced / faster
Kuasa enjin Tinggi Daya lebih besar / lebih cepat

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Sektor Pembelajaran, Jabatan Pendidikan Negeri Sabah | 2020 371