SAINS TING 3 BAB7 TENAGA & KUASA
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Medium
Ayumi Ayumi
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25 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah kotak yang berjisim 2 kg ditarik pada permukaan lantai sejauh 6m. Berapakah jumlah kerja yang dilakukan? (1kg=10N) (Kerja = Daya,x sesaran)
75 J
102 J
100 J
120 J
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Seorang murid mengambil masa 10 saat untuk menolak sebuah meja sejauh 2 m. Berapakah kuasa yang dijanakan jika daya yang dikenakan ialah 60N?
kuasa,P = Kerja / Masa
60 W
12 W
20 W
36 W
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rajah menunjukkan sebuah ‘roller coaster’ bagi sebuah taman tema. Pada titik A, B, C dan D, manakah gerabak yang mempunyai tenaga keupayaan graviti yang paling tinggi?
A
B
C
D
4.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Antara aktiviti berikut, yang manakah mempunyai tenaga keupayaan kenyal?
Roller-Coaster
Spring yang dimampatkan
Busur yang diregangkan oleh pemanah
Ayunan bandul ringkas
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rajah menunjukkan seorang pekerja menarik beban yang beratnya 10 kg dari atas tanah ke satu ketinggian 5m.
Berapakah nilai tenaga keupayaan graviti ?
Tenaga keupayaan graviti = kerja yang dilakukan
= mgh
(g ialah pecutan graviti dalam unit 10 ms-2)
50 J
500 J
100 J
1000 J
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rajah menunjukkan ayunan bandul ringkas. Pada kedudukan manakah tenaga kinetik adalah maksimum?
Kedudukan A
Kedudukan B
Kedudukan C
Kedudukan D
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hasil darab daya dan sesaran dalam arah sama dengan daya ialah
kerja
tenaga
kuasa
watt
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