國中自然2下6-2_
Quiz
•
Fun
•
7th - 9th Grade
•
Practice Problem
•
Hard
Tang Da
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有一物體重量為乙kgw,靜置於水平桌面上。若物體兩側分別施以在同一直線上的水平作用力甲kgw和丙kgw,發現物體仍靜止不動,如附圖所示,則該物體所受摩擦力的大小可以表示為多少kgw?
乙
甲+丙
丙-甲
甲-乙
2.
MULTIPLE CHOICE QUESTION
1 min • 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?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何種作法有助於減少摩擦力?
4.
MULTIPLE CHOICE QUESTION
1 min • 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?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者不是為了減少摩擦力而設計的?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
創天用力將1.5公斤重的木塊緊壓在牆上,如附圖所示,若木塊靜止不動,則下列敘述何者錯誤?
創天施力剛好為1.5公斤重
木塊所受合力為零
木塊所受的摩擦力為1.5公斤重
創天施力大小剛好等於牆壁對木塊的作用力
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於摩擦力的敘述,下列何者正確?
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