
B5C2_力與運動
Interactive Video
•
Science
•
9th Grade
•
Practice Problem
•
Hard
chungtsenchen01 chungtsenchen01
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什麼是牛頓的第一定律的核心概念?
物體會加速運動
物體會隨機改變方向
物體在沒有外力時保持靜止或等速直線運動
物體會自行改變運動狀態
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根據牛頓的第二定律,什麼因素會影響物體的加速度?
施加的力和物體的質量
物體的溫度
物體的形狀
物體的顏色
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
牛頓的第三定律告訴我們什麼?
力會隨時間消失
力總是成對出現,大小相等方向相反
力是單獨存在的
力只作用在一個物體上
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為什麼月亮不會掉到地球上?
因為月亮是靜止的
因為地球沒有引力
因為月亮沒有質量
因為月亮的速度足夠快,讓它在掉落的同時也在前進
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
萬有引力定律告訴我們什麼?
只有地球有引力
只有月亮有引力
任何有質量的物體之間都會互相吸引
引力只存在於太空中
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