

B5-ch-3-2-1
Presentation
•
Physics
•
9th Grade
•
Practice Problem
•
Easy
楊 秉正
Used 1+ times
FREE Resource
5 Slides • 8 Questions
1
3-2
動能、位能與能量守恆
2
3
4
Drag and Drop
1.當物體
2.當物體
5
Multiple Choice
下列有關動能的敘述,何者正確?
物體的運動速率越快,動能越大
物體的運動速率越快,動能越小
物體的運動速率增加時,動能減少
物體的運動速率與動能無關
6
Multiple Choice
甲、乙、丙三個木塊在光滑平面上運動,如圖所示。請問甲、乙兩木塊何者動能較大?
甲
乙
一樣
無法比較
7
Multiple Choice
甲、乙、丙三個木塊在光滑平面上運動,如圖所示。請問乙、丙兩木塊何者動能較大?
乙
丙
一樣
無法比較
8
9
Drag and Drop
1.
2.物體與地表的
10

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11
Multiple Choice
將下列四個不同質量的物體移至相同的高度,何者所具有的重力位能最大?
80 kg
60 kg
40 kg
20 kg
12
Multiple Choice
將高爾夫球和乒乓球,自沙堆上2公尺高的地方自由落下,若不計空氣阻力,下列敘述何者正確?
兩球在沙堆上留下的坑洞一樣深
高爾夫球落到沙堆前的速率較快
兩球落到沙堆前的速率相同
乒乓球落到沙堆前減少的重力位能較多
13
Multiple Choice
如附圖所示,某座城堡上有四位士兵在不同地點駐守著。兩軍交戰時,這四位士兵使相同質量的石塊自由落下,企圖砸中城牆下的敵軍,則敵軍被哪一個士兵的石塊砸中時,受傷的情形將最為嚴重?
甲
乙
丙
丁
3-2
動能、位能與能量守恆
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