Page 20 - Hybrid PBD KSSM 2021 Tg 5 - Fizik

Fizik Tingkatan 5 Bab 1
10. Labelkan gambar rajah jasad bebas di bawah dengan daya-daya yang bertindak ke atas objek-objek berikut.
Label the free body diagrams below with the forces that acted on the following objects. SP 1.1.3 TP2
(a) Daya ke atas (b) Tindak balas normal, R

Upward force Normal reaction, R

Daya ke kiri Daya ke kanan
Leftward force Rightward force

Daya ke bawah
Resultant force, F = 0 N Penerbitan Pelangi Sdn Bhd. All Rights Reserved
Downward force
Berat, W
Weight, W

11. Tandakan betul (✓) atau salah (✗) pada pernyataan berikut. SP 1.1.3 TP2
Tick (✓) or wrong (✗) for the following statements.
(a) Hukum gerakan Newton kedua menyatakan bahawa apabila suatu daya luar yang bersih ✓
bertindak pada suatu objek, pecutan objek itu adalah berkadar terus dengan magnitud
daya dan berkadar songsang dengan jisim objek.
Newton’s second law of motion states when an external force is acting on an object, the acceleration of the object is
directly proportional to the magnitude of force and is inversely proportional with the mass of the object.
(b) Hukum Gerakan Newton Kedua boleh diungkapkan sebagai F = ma. ✓
Newton’s Second Law of Motion can be expressed as F = ma

12. Lengkapkan jadual berikut. SP 1.1.3 TP2
Complete the following table.

Objek bergerak dengan halaju Objek bergerak dengan pecutan
Objek dalam keadaan pegun
Object in a stationary state seragam seragam
Object moving with a uniform velocity Object moving with a uniform acceleration

Tindak balas normal, R Tindak balas normal, R Tindak balas normal, R
Normal reaction, R Normal reaction, R Normal reaction, R
Daya Daya
geseran, Tujahan geseran, Tujahan
F R enjin, T F R enjin, T
Friction Engine Friction Engine
force, F R thrust, T force, F R thrust, T
Berat, W Berat, W Berat, W
Weight, W Weight, W Weight, W

(a) Daya paduan, F = 0 N (b) Daya paduan, F = 0 N (c) Daya paduan F ≠ 0 N
Resultant force, F = 0 N Resultant force, F ≠ 0 N
Berat = Tindak balas normal Berat = Tindak balas normal Objek dalam pecutan
Weight = Normal reaction Weight = Normal reaction Oject in acceleration
Tindak balas normal
Pecutan, a = 0 m s –2 Tujahan Enjin = Daya geseran Berat = Normal reaction
Acceleration, a = 0 m s –2 Engine thrust = Frictional force Weight =
Pecutan, a = 0 m s –2 Tujahan Enjin > Daya geseran
Acceleration, a = 0 m s –2 Engine thrust > Frictional force
–2
Pecutan, a ≠ 0 m s
Acceleration, a ≠ 0 m s –2

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Bab 1.indd 8 11/19/21 4:05 PM