一段複習
Quiz
•
Science, Other Sciences, Geography
•
8th Grade
•
Medium
張王彥 張王彥
Used 1+ times
FREE Resource
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74 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
一位自行車選手在速度為20 m/s時,以等減速度2 m/s2煞車,
則從煞車到停止共歷時多少秒?
3
4
5
10
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
某汽車製造商宣稱他們所生產的汽車性能絕佳,可在5秒內速度由零加速至30m/s,
則此汽車的平均加速度為多少m/s2?
6
5
21.6
10
3.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
汽車在一直線上行駛其速度對時間的關係如附圖所示,
則汽車行駛的平均加速度為幾公尺/秒2?
0
2
10
20
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
下列有關加速度的敘述,何者正確?
有大小,無方向性
有大小,有方向性
無大小,有方向性
無大小,無方向性
5.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
物體由靜止以等加速度2 m/s2開始運動,經過若干秒後物體的速度為10 m/s?
2
4
5
10
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
附圖為直線行駛的甲、乙、丙三車之速度對時間的關係圖,
此三車之加速度大小關係為何?
甲>乙>丙
甲<乙<丙
甲>乙=丙
甲=乙>丙
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
關於物體的加速度,下列何者正確?
速度為零,
加速度必為零
加速度的方向一定
與速度的方向相同
加速度減小,
速度必減小
加速度一定時,物體可能做等加速度運動
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