九上自然3.1功與功率
Quiz
•
Physics
•
9th Grade
•
Practice Problem
•
Hard
胡綱顯 胡綱顯
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5 questions
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
那些是功的單位？
焦耳(J)
牛頓．公尺(N．m)
公斤(kg)
公尺(m)
瓦特(W)
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
那些情況沒有作功(W=0)？
物體沒有受力(F=0)
物體有受力，但沒有位移(S=0)
作用力與位移方向垂直
作用力與位移方向相同
作用力與位移方向相同相反
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
何者作正功(W>0？
作用力與位移方向垂直
作用力與位移方向相同
作用力與位移方向相反
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
何者作負功(W<0)？
作用力與位移方向垂直
作用力與位移方向相同
作用力與位移方向相反
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
哪些是功率的單位？
瓦特(W)
千瓦(kW)
焦耳(J)
焦耳/秒
(J/s)
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