
9上1-1~2-2理化複習
Interactive Video
•
Science
•
9th Grade
•
Easy
國坤 陳
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
描述一個物體的位置需要哪些要素?
參考點、方向、速度
參考點、方向、距離
參考點、時間、距離
速度、方向、距離
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
路徑長和位移之間的主要區別是什麼?
路徑長是向量,位移是純量。
路徑長只關心起點和終點,位移關心運動過程。
路徑長是運動的總距離,位移是位置的變化量。
路徑長可以是負值,位移一定是正值。
3.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
您喜歡視訊課程嗎?
是
否
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在速度-時間 (v-t) 關係圖中,水平線代表什麼?
物體正在加速。
物體正在減速。
物體以等速度運動。
物體靜止不動。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根據牛頓第一運動定律(慣性定律),物體會改變其運動狀態,除非受到什麼作用?
摩擦力
重力
外力
阻力
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