107國中自然2下_6-2
Quiz
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Other
•
7th - 9th Grade
•
Practice Problem
•
Hard
Yu Liu
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將一物體在均勻的水平桌面上做摩擦力實驗,則下列哪一種摩擦力不為定值?
動摩擦力
最大靜摩擦力
靜摩擦力
上述三者均為定值
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何種作法有助於減少摩擦力?
鞋子底面的花紋
賽跑時穿釘鞋
輪胎表面的凹凸條紋
腳踏車的齒輪添加潤滑油
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
推動一物體所產生之最大靜摩擦力與動摩擦力,其大小關係為何?
最大靜摩擦力>動摩擦力
最大靜摩擦力=動摩擦力
最大靜摩擦力<動摩擦力
資料不足,無法判斷
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水平桌面上有一本書,有關這本書靜止時的受力關係,下列敘述何者錯誤?
書是靜止的,因此不受力的作用
書所受的桌面支撐力大小和書的重量相等
桌面支撐力的方向鉛直向上
書本與桌面的摩擦力等於零
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水平面上有一40公斤重的物體,若聖文施以10公斤重的水平推力後,物體仍然靜止不動,則此時摩擦力大小為何?
0
4公斤重
10公斤重
40公斤重
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是為了減少摩擦力而設計的?
汽車越來越趨向流線型
泳衣越來越來貼身
軸承上潤滑油
輪胎上的紋路
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某物體10公克重,原靜止於桌面上,如附圖所示,今在物體兩側分別施以20公克重與9公克重的水平力,發現物體仍靜止不動,則該物體所受的摩擦力大小為何?
0
1公克重
10公克重
11公克重
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