
Usaha dan Energi
Authored by ELSA EVANGELISTA
Science
8th Grade
Used 1+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seorang siswa mendorong dinding dengan gaya 50 N selama 10 detik, namun dinding tidak berpindah. Berapa besar usaha yang dilakukan?
0 J
500 J
5 J
100 J
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dua benda A dan B memiliki kecepatan yang sama. Benda A bermassa 2 kg dan B bermassa 4 kg. Manakah pernyataan yang benar?
Energi kinetik A = B
Energi kinetik A > B
Energi kinetik A = 2 × energi B
Energi kinetik B = 2 × energi A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Energi potensial adalah...
Energi yang dimiliki benda karena kecepatannya
Energi yang dimiliki benda karena posisinya
Energi yang dihasilkan dari tumbukan
Energi yang timbul dari gesekan
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah benda bermassa 2 kg bergerak dengan kecepatan 3 m/s. Berapakah energi kinetiknya?
9 J
3 J
6 J
18 J
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bola yang dijatuhkan dari ketinggian berubah energi dari...
Energi kinetik menjadi potensial
Energi panas menjadi kimia
Energi potensial menjadi kinetik
Energi kimia menjadi panas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salah satu keuntungan penggunaan katrol tetap adalah...
Memperbesar gaya
Memperkecil massa benda
Mengubah arah gaya
Mengurangi gesekan
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika digunakan katrol ganda, berapa besar gaya yang dibutuhkan untuk mengangkat beban 100 N?
100 N
75 N
50 N
25 N
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