
2下力的測量
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
hsiangchi chang
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者是屬於接觸力?
免洗筷的塑膠包裝袋,容易沾黏在手上
拉滿弓將箭射出
地球繞太陽公轉
磁鐵吸引圖釘
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
已知阿呆在地球上的質量是60 kg,那麼:
他在地球平地上的重量約是60 kgw
他在月球上的質量約是10 kg
他在沒有重力的太空中質量變成0 kg
他在地球的高山上重量會大於60 kgw
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一物體置於地面上,同時掛在一彈簧秤下,如附圖所示,已知物體的重量為1000公克重,彈簧秤的讀數為200公克重,則地面對物體的支撐力為多少公克重?
200
800
1000
1800
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列何者不是處在兩力平衡的狀態?
手拉彈簧至20 cm後,靜止不動
擺在桌上的理化課本
足球在地上愈滾愈慢
靜止浮在海面上的漁船
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一條彈簧的上端固定於支架上,下端未吊掛物體時,彈簧的長度為10 cm。在其下方吊掛一個質量未知的物體甲,彈簧的總長度變為12 cm,接著在物體甲的下方,再加掛一個60 g的砝碼,則彈簧的總長度變為15 cm。若移除物體甲與砝碼後,彈簧恢復原長,則物體甲的質量應為多少?
24 g
40 g
48 g
75 g
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
小文以相同質量的砝碼作「力的測量」實驗,彈簧長度與砝碼個數的關係如附表所示。根據附表,何項敘述可能是錯誤的?
放1個砝碼時,彈簧長度為11公分
放3個砝碼時,彈簧長度為13公分
放7個砝碼時,彈簧長度為17公分
放9個砝碼時,彈簧長度為19公分
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列為各物體受力作用的情形,何者處於兩力平衡的狀態?
8.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
右圖表示一條彈簧受力和其總長度的關係,下列有關此彈簧的敘述何者正確?
彈簧受力20gw時,伸長4cm
彈簧受力25gw時,伸長9cm
彈簧掛任何物體,長度最長為32cm
彈簧原始長度為20cm
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