1. 下列圖形都是利用每秒閃光 20 次的照相裝置,拍攝四物體的運動情形,圖中箭頭表示運動的方向,何者是作等速度運動?

0820 國三理化小考 1-3~1-4

Quiz
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Physics
•
9th Grade
•
Medium
Cindy Cindy
Used 3+ times
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
(甲)(乙)
(丙)(丁)
僅(丙)
僅(丁)
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
2. 已知 v-t 的圖形如圖所示,則下列何者為其換成之 a-t 圖形?
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
3. 若不計空氣阻力,一個 2 公斤重之物體自樓上自由落下,經 10 秒到達地面,則一個 4 公斤重之物體自同處自由落下,經幾秒到達地面?
5 秒
10 秒
20 秒
40 秒
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
4. 如圖為甲、乙兩車之速度(v)與時間(t)的關係,圖中兩直線斜向平行,則在相同的時間間隔內,哪一輛車所走的距離比較大?
甲車
乙車
一樣大
無法比較
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
5. 以速度(v)與時間(t)的關係圖概略描寫一火車以負等加速度進站,停靠月臺一段時間後,再以等加速度向下一站行駛。整個過程以下列何者為正確?
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
6. 下列有關自由落體的敘述(不計空氣阻力),何者正確?
物體落下過程中,每秒的速度變化量相等
高度不同時,落地的速度都相同
物體落下過程中,速度和加速度同時增大
物體質量不同時,落下的加速度也不相等
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
7. A、B 兩球同時自 20 公尺之高樓自由落下。若 A、B 兩球質量比為 3:1,則當著地前瞬間,A、B 兩球敘述下列何者正確?
所受的重力比為 3:1
所需的時間比為 3:1
末速度比為 1:3
加速度比為 1:3
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