
南一國中自然9上ch1-3
Authored by 南一 自然
Science
9th Grade
Used 11+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
+6公尺/秒與-6公尺/秒的意義是:
速度相同,方向不同
速度不同,方向相同
速率相同,方向不同
速率不同,方向相同
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
假設童老師在一道路上等速度騎腳踏車,有關其運動的敘述,下列何者正確?
等速度運動必為直線運動
無法表示方向性
等速度運動任一時刻的速度不一定相等
等速度運動不一定為直線運動
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
辰辰往返於學校和家裡,去時花了a分鐘,回時花了b分鐘則其平均速率大小為何?
a+b
2×a×b
2×a×b/(a+b)
(a+b)/2×a×b
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
蘇老師上課時在黑板上寫了10公尺∕秒與-10公尺∕秒,其意義為何?
速率相同,方向不同
速率不同,方向相同
速度不同,方向相同
速度相同,方向不同
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列是幾種常見的物理量,哪一種不具有方向性?
位移
重力
速度
路徑長
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物體在運動過程中,速度的大小和方向始終維持一定,稱為什麼?
加速度運動
等速度運動
自由落體運動
減速度運動
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
甲丁二車在同一位置出發
乙丙二車在同一位置出發
乙丙二車相距愈來愈遠
甲乙丙丁四車無法在同一位置相遇
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