
Usaha
Interactive Video
•
Science
•
8th Grade
•
Practice Problem
•
Hard
Putra Wiratha
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam simulasi pertama, sebuah bus sekolah didorong oleh satu orang dengan satu tangan tetapi tidak bergerak. Mengapa tidak ada usaha yang dilakukan pada bus tersebut?
Orang tersebut tidak memiliki cukup energi.
Gaya yang diberikan terlalu kecil.
Tidak ada perpindahan pada bus.
Bus terlalu berat untuk didorong.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa definisi usaha dalam fisika?
Energi yang dibutuhkan untuk menghasilkan gaya.
Gaya yang diberikan pada suatu benda.
Energi untuk memindahkan benda dengan gaya tertentu.
Perpindahan suatu benda akibat gaya.
3.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Apakah Anda menikmati pelajaran video tersebut?
Ya
Tidak
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika sebuah gaya (F) diberikan pada suatu benda dengan membentuk sudut (α) terhadap arah horizontal, bagaimana rumus komponen gaya horizontal (Fx) yang menyebabkan perpindahan?
Fx = F sin α
Fx = F cos α
Fx = F tan α
Fx = F / cos α
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah robot mendorong kotak ke atas bidang miring dengan sudut kemiringan α. Jika massa kotak adalah m dan percepatan gravitasi adalah g, bagaimana rumus usaha yang dilakukan robot untuk memindahkan kotak sepanjang bidang miring?
W = m.g.s
W = m.g.cos α.s
W = m.g.sin α.s
W = F.s
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