0817

0817

11th Grade

10 Qs

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0817

0817

Assessment

Quiz

Physics

11th Grade

Practice Problem

Hard

Created by

栢川 林

Used 1+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

地面上有一質量為2.5 kg的鋼球,已知此球在地面上不同的位置將受到不同的力作用,其關係如圖所示。若某個時刻此鋼球在位置8 m的地方且速度恰好為0。試問再經π s後此鋼球的速度量值為多少m/s?

0

2

π\pi

8π\frac{8}{\pi}

258\frac{25}{8}

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

一理想的彈簧下方鉛直懸掛質量為m的物體,當物體由彈簧的自然長度靜止釋放,平衡時彈簧伸長x。自平衡點物體向下拉x後再釋放,則物體振動的最大速率為何?(重力加速度量值為g

gx\sqrt{gx}

2gx\sqrt{2gx}

2gx2\sqrt{gx}

3gx\sqrt{3gx}

5gx\sqrt{5gx}

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

作簡諧運動之物體,其位置與時間關係為 x=5\sin\left(\frac{\pi}{2}t+\frac{\pi}{6}\right)  ,其中x的單位是m,t的單位是s,則由開始至平衡點須耗時多少s?

 13\frac{1}{3}  

 11  

 23\frac{2}{3}  

 53\frac{5}{3}  

 22  

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

某一物體沿x軸作簡諧運動,若其位置與時間的關係為 x=8cos(π5t)x=8\cos\left(\frac{\pi}{5}t\right)  cm,式中t以s計,則物體的最大速率為多少cm/s?

 0.8π0.8\pi  

 1.2π1.2\pi  

 1.6π1.6\pi  

 2.0π2.0\pi  

 2.4π2.4\pi  

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

如圖為一質點作簡諧運動之位置(x)對時間(t)的函數圖,設向右為正,則:

時刻t1瞬間物體速度向左

時刻t1瞬間物體受力向右

時刻t6瞬間物體速度向右

時刻t6瞬間物體受力向左

時刻t2質點瞬時加速度量值最大

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

如圖所示,一個作等速圓周運動的物體,觀測其在直徑上投影的運動情形,發現物體的投影在直徑AB間來回運動,O為圓心,COA中點。關於物體投影的運動狀況,下列敘述何者正確?

物體的投影做等速率SHM

AB物體的投影之速率逐漸減小

AO與由OB,物體的投影之平均速率相同

O等遠處,物體投影的加速度相等

物體的投影由AC與由CO,所需的時間相等

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

一物作簡諧運動,振幅為R。由平衡點移動 R2\frac{R}{2}  的距離與自端點移動 R2\frac{R}{2}  的距離所需的時間比為何?

 1:11:1  

 1:21:\sqrt{2}  

 1:21:2  

 2:12:1  

 2:1\sqrt{2}:1  

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