Page 5 - Modul A+1 Fizik Tingkatan 4

(c) Rumus digunakan untuk memerihalkan kuantiti terbitan dalam sebutan kuantiti asas. Seterusnya dari
rumus tersebut unit kuantiti terbitan dalam unit asas boleh diperoleh.
Formulas are used to describe derived quantities in terms of base quantities. From the formulas unit for derived
quantities in base unit can be obtained.
Contoh/Example
BAB 1

Kuantiti terbitan Rumus Sebutan dalam Unit S.I.
Derived quantity Formula kuantiti asas S.I. unit
Ketumpatan m Terms in base kg m –3
Density r = — quantities
v
m
———–
l × l × l
6. Kuantiti skalar: Kuantiti fizik yang mempunyai magnitud tetapi tiada arah.
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Scalar quantities: Physical quantity that have magnitude but no direction.
7. Kuantiti vektor: Kuantiti fizik yang mempunyai magnitud dan arah.
Vector quantities: Physical quantity that have magnitude and direction.

A Kuantiti asas dan kuantiti terbitan
Base quantity and derived quantity
1. Jadual 1.1 menunjukkan kuantiti asas bersama simbol kuantitinya. Lengkapkan jadual untuk unit S.I. dan simbol unit
masing-masing.
Table 1.1 shows base quantities and their respective quantity symbols. Complete the table for the respective S.I. units and unit
symbols. TP 1

Kuantiti asas Simbol kuantiti Unit S.I. Simbol unit S.I.
Base quantity Quantity symbol S.I. unit S.I. unit symbol

Panjang / Length l metre m

Jisim / Mass m kilogram kg

Masa / Time t second s

Arus elektrik / Electric current I ampere A

Suhu mutlak / Absolute temperature T kelvin K

Keamatan berluminositi / Luminous intensity I candela cd
v
Kuantiti jirim / Quantity of matter n mol mol
Jadual 1.1/Table 1.1

2. Jadual 1.2 menunjukkan beberapa kuantiti terbitan dalam sebutan kuantiti asas. Lengkapkan jadual tersebut.
Table 1.2 shows some derived quantities expressed in base quantities. Complete the table. TP 3
Hubungan dengan Sebutan dalam unit Unit S.I.
Kuantiti terbitan Rumus kuantiti asas (Jika ada)
asas
Derived quantity Formula Relation with base Terms in base unit S.I. unit
quantities (If any)
Luas, A 2
Area, A A = l l × l m × m = m 2 –

Isi padu, V 3
Volume, V V = l l × l × l m × m × m = m 3 –
Ketumpatan, ρ m ———–
m
Density, ρ ρ = — l × l × l kg m –3 –
V

2

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