
力喔
Authored by 王 大智
English
8th Grade
Used 2+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各種現象,何者表示物體沒有「力」的效應?
蘋果從樹上掉落到地面
保特瓶被擠壓變形
向東方滾動的籃球突然向西滾動
電風扇靜止掛在天花板上
2.
MULTIPLE CHOICE QUESTION
30 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
浮在海面上的漁船
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者情形為力的平衡狀態?
靜止
等速度
靜止或等速度
世上不可能達平衡狀態
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
右圖中的物體重 10 公斤,則彈簧拉物體向上的力為多少?
大於 10 公斤重
等於 10 公斤重
小於 10 公斤重
無法判斷
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
(甲)彈弓射出石塊;(乙)鐵粉分布在磁鐵四周;(丙)月亮繞地球旋轉; (丁)推開門;(戊)兩人相撞而跌倒。以上何種現象沒有接觸,卻有力的作用? (A) (B) (C) (D)。
甲乙
甲丁
丙戊
乙丙
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一彈簧原長 20 cm,上端固定,下端掛10gw鐵塊時彈簧全長 24 cm,若在改加掛一木塊, 則全長 32 cm(假設全部在彈性限度內),可知木塊多重?
80
30
32
無法判斷
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
根據右表的彈簧實驗數據,下列敘述何者錯誤?
當彈簧全長為 12 cm 時,彈簧所受外力為 50 gw
每次實驗欲增加外力時,必須先去除所有外力,觀察彈簧是否恢復原長,沒有損壞
外力和彈簧全長並非正比關係
此彈簧的原長為 7 cm
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