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?
國中自然2下6-2_

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7th - 9th Grade
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Tang Da
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
乙
甲+丙
丙-甲
甲-乙
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
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