
勻變速運動

Quiz
•
Physics
•
10th Grade
•
Hard
Sheila Si
Used 1+ times
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
物體在直線上運動之速度漸增時可以確定
加速度漸增
加速度漸減
加速度一定
加速度與速度同向
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
質量為20克的石塊自高為20米的樓頂自由落至地面,求石塊在空中的時間?(g=10m/s2)
1 s
2 s
3 s
4 s
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
質量為20克的石塊自高為20米的樓頂自由落至地面,求石塊落地的速度大小?
(g = 10m/s2)
15 m/s
10 m/s
40 m/s
20 m/s
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一石頭鉛直往上丟,經2秒落回起點,若最高點離地為5米,則石頭之平均速率為多少?(g = 10m/s2)
2.5 m/s
5 m/s
7.5 m/s
10 m/s
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在地面上以初速度20 m/s鉛直上拋一石頭,若不計算空氣阻力的影響,石頭的飛行時間為何?(g = 10 m/s2)
1 s
2 s
4 s
20 s
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
由靜止做直線等加速度運動,在第一秒內的位移為S1 ;在第二秒內的位移為S2 ;在第三秒內的位移為S3 ;則S1:S2:S3為
1:1:1
1:2:3
1:4:9
1:3:5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一質點在直線上運動,位置與時間的關係為x = t 2 - 2 t + 9(右為正向),則在 t = 0至 t = 3 s 之間的平均速度為多少m/s?(其中 x 以公尺,t 以秒為單位)
-1
2
-2
1
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一運動質點,其位置x(m)與時間t(s)之關係式為 x =t 2 - 2 t + 5,前4秒內的平均速度為多少m/s?
0
2
5
11
9.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列有關運動的函數圖之敘述,何者正確?
x-t圖中,曲線與時間軸所夾的面積等於速度變化量
v - t圖中,曲線與時間軸所夾的面積等於位置
v - t圖中,曲線上任一點的切線斜率等於該時刻的瞬時加速度
v - t圖中,曲線上任兩點間的割線斜率等於兩時刻間的平均速度
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