7.1: Kerja, Tenaga dan Kuasa

Quiz
•
Science
•
9th Grade
•
Hard
Masyitah maulana
Used 1K+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A climber of 65 kg climbs up a hill of 60 m high in 5 minutes. The output power of the climber is
Seorang pemanjat 65 kg memanjat bukit yang tingginya 60 m dalam masa 5 minit. Kuasa output bagi pemanjat tersebut adalah
A 13.0 W
B 130 W
C 780 W
D 7 800 W
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a motor lifting a load of mass 8.0 kg. The motor takes 4 s to lift the load to a height of 0.5 m.
Rajah menunujukkan sebuah motor mengangkat beban 8.0 kg. Motor itu mengambil masa 4.0 s untuk sampai pada suatu ketinggian 0.5 m.
What is the power of the motor?
Berapakah kuasa motor itu?
A 4 W
B 10 W
C 16 W
D 40 W
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diagram shows a weightlifter succesfully lifting a load of 60 kg.
Rajah menunjukkan seorang ahli angkat berat berjaya mengangkat beban 60 kg.
Calculate the work done in lifting the load.
Hitung kerja yang telah dilakukan untuk mengangkat beban tersebut.
A 30 J
B 120 J
C 600 J
D 1200 J
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which situation shows no work being done?
Situasi manakah yang menunjukkan tiada kerja dilakukan?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diagram shows a student with mass 70 kg climbing stairs at a height of 4 m in 40 s.
Rajah menunjukkan seorang murid berjisim 70 kg menaiki tangga setinggi 4 m dalam masa 40 s.
How much power is generated by the student?
Berapakah kuasa yang dijanakan oleh murid itu?
A 28 W
B 35 W
C 70 W
D 700 W
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Liza mengangkat sebuah kerusi seberat 40N sehingga ke aras ketinggian 50 cm.
berapakah kerja yang dilakukan oleh liza untuk mengangkat kerusi itu?
10 J
20 J
200 J
12.25 J
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Apakah yang diperlukan untuk mengira kerja yang dilakukan?
MASA
JARAK
SESARAN
DAYA
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