Force
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
CHEN HSI CHUAN
Used 3+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
處於靜止狀態之物體,其所受的合力大小應為何?
等於物重
等於支撐力
等於摩擦力
等於零
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
小昌的書桌上放有一座男子羽球單打冠軍獎盃,則此獎盃受力的情形為何?
不受外力作用
只受到桌子的支撐力作用
只受到重力的作用
1. 同時受到重力及桌子支撐力的作用。
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
華正取一個彈性限度標示為100gw,原長為10cm的彈簧測量20gw的砝碼時,彈簧全長為18cm,若改掛一個玩具小熊,則彈簧全長為14cm。請問玩具小熊的重量為多少gw?
10
20
30
35
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
今有兩個力同時作用在靜止的物體上,甲力120公克重,向西;乙力40公克重,向東。欲保持物體不動,還需要一個丙力,則其大小及方向為何?(註:甲、乙、丙三力作用在同一直線上)
160公克重,向東
160公克重,向西
80公克重,向東
80公克重,向西
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
一個靜止的物體,同時受兩力作用,關於兩力的合力大小與夾角,下列敘述何者正確?
若一個力為10kgw,另一個力為5kgw,則兩力不可能合成8kgw
如果兩個力的合力不為零,則物體會往量值較大的力之方向移動
兩力夾角成90度時合力最小
兩力夾角越大,合力越小
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
一物體置於磅秤的上方,同時掛在一彈簧秤下,如附圖所示,已知磅秤的讀數為200公克重,彈簧秤的讀數為100公克重,且物體呈靜止不動,則物體的重量應為多少公克重?
100
200
300
400
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
大華、大明兩人朝同一方向推動一個大球,如果大華施力80kgw,大明施力60kgw,則大球受到兩人推力的合力大小為多少kgw?
20
70
100
140
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