Antara berikut, manakah formula yang betul tentang kerja?
sains t3 Bab 7

Quiz
•
Science
•
2nd - 3rd Grade
•
Hard
arpah abu chik
Used 30+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kerja = Daya x Jarak
Kerja = Daya / Jarak
Kerja = Jarak / Daya
Kerja = Tenaga x Masa
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Apakah simbol unit bagi kerja?
W
Nm
1/2 mv2
mgh
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pilih padanan yang betul tentang tenaga dan formulanya
Tenaga keupayaan graviti = 1/2 mv2
Tenaga keupayaan kenyal = mgh
Tenaga kinetik = 1/2 mv2
Tenaga = 1/2 Fx
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
---------------------------- menyatakan tenaga tidak boleh dicipta atau dimusnah, tetapi ianya boleh berubah bentuk.
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Sebuah lif di pusat membeli belah yang membawa beban berjisim 500 kg ke suatu ketinggian 20m dalam masa 20 saat. Berapakah kerja yang dilakukan oleh lif itu?(g dianggarkan sebagai 10ms-2?
1000 J
20,0000 J
100,000 J
2000 J
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Rajah di sebelah menunjukkan suatu spring yang dimampatkan . Panjang asal spring ialah 15 cm. Panjang spring menjadi 10cm apabila suatu daya 20N dikenakan.
a. Berapakah jarak mampatan, x spring itu?
b. Hitung tenaga keupayaan kenyal yang dimiliki oleh spring yang termampat itu, dengan menggunakan formula 1/2 Fx.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Gambar menunjukkan kedudukan bandul. Antara berikut , manakah padanan yang benar kedudukan bandul dengan jenis tenaga?
P- Tenaga Kinetik (TK) maksimum, Tenaga Keupayaan Graviti (TKG) zero
Q- Tenaga Kinetik (TK) bertambah, Tenaga Keupayaan Graviti (TKG) berkurangan
R- TKG maksimum, TK minimum
S- TK zero , TKG minimum
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