
第三章第六章動量與碰撞
Quiz
•
Physical Ed
•
11th Grade
•
Practice Problem
•
Medium
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25 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
某物質量為2.0 kg,初速3.0 m/s向東;受力作用5.0 s後,末速為4.0 m/s向西,則所受動量變化大小為多少N.s?
2.0
6.0
8.0
12.0
14.0
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
原為靜止的物體爆裂成3塊,已知碎塊皆在同一水平面上,且質量皆相等,若甲以8 m/s向東飛出,丙以6 m/s向南飛去,則乙的動量方向為何?
向西偏北
向西偏南
向東偏南
向東偏北
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
質量2 kg的物體A以10 m/s速度撞上1 kg的靜止物體B,撞後A沿原運動方向以5 m/s前進,則撞後B的速率為何?
8 m/s
10 m/s
12 m/s
15 m/s
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
設於無摩擦之桌面上置有7個相同的鋼球,其中四個接連排放一列,另三個自左方以速度v正面彈性碰撞此四球,如圖所示。假設為彈性碰撞,則碰撞後有幾個球離開?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
質量m的紅皮球(左球)向質量同為m的綠皮球(右球)相向作正向彈性碰撞,紅皮球的速率為v、綠皮球的速率為v/4,如圖,則碰撞後紅皮球的速率為何?
v/4
v/3
v/2
v
2v
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
質量分別為10公斤和5公斤的兩球以附圖速度作一維碰撞,試問哪一張圖可能是其碰撞後的結果?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若兩物體發生碰撞,碰撞前後系統總動能守恆,則兩者屬於何種碰撞?
彈性碰撞
非彈性碰撞
完全非彈性碰撞
正向碰撞
斜向碰撞
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