Math in PHY

Math in PHY

10th Grade

10 Qs

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Math in PHY

Math in PHY

Assessment

Quiz

Physics

10th Grade

Practice Problem

Hard

Created by

Kai Xie

Used 2+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 已知 a=3i4j\overrightarrow{a}=3\overrightarrow{i}-4\overrightarrow{j}  、 b=i+2j\overrightarrow{b}=-\overrightarrow{i}+2\overrightarrow{j}  ,則 a+b=\overrightarrow{a}+\overrightarrow{b}=  ?

 4i+6j4\overrightarrow{i}+6\overrightarrow{j}  

 2i+2j2\overrightarrow{i}+2\overrightarrow{j}  

 4i+2j4\overrightarrow{i}+2\overrightarrow{j}  

 2i2j2\overrightarrow{i}-2\overrightarrow{j}  

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知 a=5i4j\overrightarrow{a}=5\overrightarrow{i}-4\overrightarrow{j}  、 b=3i3j\overrightarrow{b}=-3\overrightarrow{i}-3\overrightarrow{j}  ,則 ba=\overrightarrow{b}-\overrightarrow{a}=  ?


 8i+j8\overrightarrow{i}+\overrightarrow{j}  

 8ij8\overrightarrow{i}-\overrightarrow{j}  

 8i+j-8\overrightarrow{i}+\overrightarrow{j}  

 8ij-8\overrightarrow{i}-\overrightarrow{j}  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖所示,下列何者為 a+b\overrightarrow{a}+\overrightarrow{b}  圖示?


Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖所示,下列何者為 ba=\overrightarrow{b}-\overrightarrow{a}=  圖示?

Media Image
Media Image
Media Image
Media Image

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

有一指針時鐘,秒針長度為10cm,則在20s內的位移為多少cm?

10310\sqrt{3}

10210\sqrt{2}

525\sqrt{2}

535\sqrt{3}

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

一物體在光滑平面上,其位置與時間關係式: x(t)=3t22t+1x\left(t\right)=3t^2-2t+1  ,則物體在第3s時的速度大小為多少?


4

18

16

22

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

一物體在光滑平面上,其位置與時間關係式: x(t)=2t2t+5x\left(t\right)=2t^2-t+5 ,則物體在第3s時的加速度大小為多少?

5

12

9

4

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