
Usaha, Energi, dan Pesawat Sederhana
Authored by Hafid Mohamad
Science
8th Grade
Used 5+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah benda bermassa 4 kg jatuh dari ketinggian 10 meter. Berapakah energi kinetik benda saat berada di ketinggian 4 meter? (g = 10 m/s²)
160 J
240 J
320 J
400 J
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Seorang pekerja menggunakan gaya 50 N untuk mendorong sebuah benda sejauh 8 meter dengan sudut 30∘ terhadap arah perpindahan. Berapakah usaha yang dilakukan pekerja?
200 J
300 J
346 J
400 J
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah mobil bermassa 1.000 kg bergerak dengan kecepatan 20 m/s. Berapakah energi kinetiknya?
200.000 J
300.000 J
400.000 J
500.000 J
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bidang miring memiliki panjang 6 meter dan tinggi 2 meter. Jika benda seberat 100 N didorong ke atas bidang miring dengan gaya F, berapakah nilai gaya F?
20 N
30 N
33,3 N
40 N
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tuas digunakan untuk mengangkat beban 300 N dengan panjang lengan kuasa 2 meter dan lengan beban 0,5 meter. Berapakah gaya minimum yang diperlukan?
50 N
75 N
100 N
150 N
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah katrol majemuk digunakan untuk mengangkat beban seberat 200 N. Jika sistem memiliki 4 tali pendukung, berapa gaya yang diperlukan untuk mengangkat beban?
25 N
50 N
100 N
150 N
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebuah sekrup memiliki jarak ulir 2 mm dan panjang lingkaran putar 20 cm. Berapakah keuntungan mekanisnya?
313
314
315
40
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