3-1功與功率-2
Authored by 夏志鍊 夏
Physics
9th Grade
Used 12+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
選正確的?
(複選三個)
力與位移同向作正功
力與位移同向作負功
力與位移反向作負功
力與位移反向作正功
力與位移垂直不作功
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
推著1公斤的椅子水平了走10公尺
重力對椅子做了多少功?
0焦耳
10焦耳
98焦耳
3.
MULTIPLE SELECT QUESTION
0 sec • 1 pt
以100牛頓的力推動5公斤的桌子
桌子等速度向前移動了2公尺
100牛頓的力作功=
0焦耳
40焦耳
10焦耳
200焦耳
4.
MULTIPLE SELECT QUESTION
0 sec • 1 pt
以100牛頓的力推動5公斤的桌子
桌子等速度向前移動了2公尺
合力作功=
0焦耳
40焦耳
10焦耳
200焦耳
5.
MULTIPLE SELECT QUESTION
0 sec • 1 pt
以100牛頓的力推動5公斤的桌子
桌子等速度向前移動了2公尺
摩擦力大小=
−50牛頓
−100牛頓
−20牛頓
6.
MULTIPLE SELECT QUESTION
0 sec • 1 pt
以100牛頓的力推動5公斤的桌子
桌子等速度向前移動了2公尺
摩擦力作功=
0焦耳
-40焦耳
-10焦耳
-200焦耳
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
功的單位
(複選二個)
J
W
N⋅m
J/s
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