Skalar n Vector
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Transcript of Skalar n Vector
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1.3 Understanding scalarand vector quantities
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At the end of this lesson
you will be able to:
Define scalar and vectorquantities
Give examples of scalar and
vector quantities
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Which team do you think will find the
park first?
Why????
Find a park
located 1 km fromstarting point.
Cari taman yang
letaknya 1km daritempat bermula
Find a park located 1
km from the south ofthe starting point.
Cari taman yang
letaknya 1km ke arah
selatan dari tempatbermula
Team A Team B
N
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What is scalar quantity?
Scalar quantity is a physical quantity that have
magnitude only.
Kuantiti skalar ialah kuantiti fizik yang
mempunyai magnitud sahaja.
What is vector quantity?
Vector quantity is a physical quantity thathave both magnitude and direction.
Kuantiti vektor ialah kuantiti fizik yang
mempunyai magnitud dan arah.
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What is distance?
Refers to how much ground an object hascovered.
Merujuk kepada berapa panjang lintasan yang
diambil oleh sesuatu objek.
What is displacement?
Refers to how far an object is from a reference
point.Merujuk kepada jarak sesuatu objek daripada
titik rujukan
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Scalar Quantity Vector Quantity
Mass/jisim Weight/berat
Time/masa Acceleration/pecutan
Power/kuasa Force/daya
Energy/tenaga Momentum
Temperature/suhu Pressure/tekanan
Density/ketumpatan Impulse/impuls
Speed/laju Velocity/halaju
Distance/jarak Displacement/sesaran
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Question 1
Scalar quantity are quantities that have
magnitude only
direction onlyboth magnitude and direction
A
CB
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Question 2
Work is a
Vector quantity
Scalar quantityDerive and vector quantity
Derived and scalar quantity
A
D
CB
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Answer 2
Work is a
Derived and scalar quantityD
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Question 3
A quantity of X has both magnitude and
direction. Which of the following is possible
quantity of X?
Volume
Power
Acceleration
A
C
B
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Answer 3
A quantity of X has both magnitude and
direction. Which of the following is possible
quantity of X?
Acceleration
Note : Acceleration is a vector quantity
C
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Properties of scalars and vectors
Scalar quantity can be summed up by
addition.
When adding vectors, the graphical
method is used to find the magnitude
and the direction.
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Properties of scalars and vectors
Total distance travelled is
_____ km
Final displacement is
______ km Kuala Lumpur
Kangar
Butterworth 507 km
369 km
138 km
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Question 1
Chee Wei walks 6 m due west from point Aand then 8 m due south. What is Chee Wei
resultant displacement from A?
8 m9 m
10 m
11 m
A
D
C
B
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Question 2
Ameer walk to school everyday. He takes routes PQand then QR as shown in figure.
What is distance travelled and the displacement
travelled from house to school everyday?
A
D
C
B
School
House
30 m
40 m
50 mDistance Displacement
50 70
70 50
80 70
90 50
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Question 3
30 km
Klang
Kuala lumpur Puchong
50 km
What are the
displacement from Klang to
Puchong and
the direction ofKlang from Kuala Lumpur?