
南一國中自然2下_ch6-2
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Medium
南一 自然
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將一個20 kgw的書桌靜置於水平的地板面上,則書桌所受的摩擦力為:
0 kgw
20 kgw
40 kgw
60 kgw
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
爸爸推動100 kgw的三輪車須克服最大靜摩擦力50 kgw,當50 kgw的兒子坐在三輪車上,若爸爸想要再推動三輪車,則須施力多少?
50 kgw
75 kgw
100 kgw
125 kgw
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
拉動一張10 kgw的椅子,拉動的那一瞬間須施力5 kgw;如果50 kgw的人坐在椅子上,此時要拉動至少須施力多少 kgw?
10
25
30
50
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如附圖所示,將4 kg的物體水平放置,施以0.5 kgw的水平推力,若此物體依然靜止不動,此時物體與接觸面之間的摩擦力為哪一種摩擦力?
靜摩擦力
最大靜摩擦力
動摩擦力
最大動摩擦力
5.
MULTIPLE CHOICE QUESTION
0 sec • 1 pt
在拔河比賽中最重要的作用力為下列何者?
磁力和電力
拉力和摩擦力
重力和空氣阻力
重力和推力
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將一長方型木塊(長×寬為10×5)橫向放置在桌面,重800gw,此時最大靜摩擦力為300gw,現將木塊直立在桌面,此時要推動木塊需多少力?
150gw
300gw
450gw
600gw
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若要使書本平貼於垂直地面的牆上而不墜落,應採用下列何種方法?
選擇表面較粗糙的牆面
選擇質量較大的書本
選擇封面紋路較多的書本
提供垂直於牆面的作用力
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