
物理三段
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Hard
周德威 周德威
FREE Resource
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100 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者是功率的單位?
耳格
馬耳
馬力
牛頓
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是動量單位?
kg·m/s
g·cm/s
kg·m/s²
N·s
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一位60公斤的溜冰者於某水平的冰面上,以5公尺/秒速度前進,接著他瞬間把一位體重的40公斤小孩,自其姿勢靜止不變處,試問兩人的速度變為多少公尺/秒?
1
2
3
5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
質量2公斤的砲彈,以300公尺/秒的初速離開砲管,則其初動能為多少焦耳?
300
600
3 x 10⁴
9 x 10⁴
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列關於能源的敘述,何者錯誤?
力學能中的動能與重力位能,可藉由鐘擺,讓動能與重力位能不斷轉換
在宇宙間,能量的總值不變,但可利用的能量愈來愈少,散亂而無法再利用的能量愈來愈多
小球反彈高度愈來愈 低,速度卻沒有增加,表示能量可能轉換為撞擊的聲能與摩擦的熱能
汽油燃燒以化學能轉換成汽車動能的過程,轉換效率可達幾乎 100%,符合能量守恆定律
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪個反應不遵守質量守恆定律?
木柴燃燒
拉長彈簧
核融合
食物消化
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關斜向拋射的物體(空氣阻力不計),則下列敘述何者正確?
到最高點時,動量為零
飛行期間動量量值均相等
飛行期間動量的鉛直分量均相等
飛行期間動量的水平分量均相等
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