Question 81: Motion in 2D & Vectors

Question

In the cube of side ‘a’ shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be -
![](https://imagex.cdn.examgoal.net/7xyf27O3dslGKUHF1/BOYW6nD2vyRln04Toe2IZDDzClq1e/pVusq3EVSuskSokhjalv4G/image.png)

Accepted Answer

$\overrightarrow {{r_g}}  = {a \over 2}\widehat i + {a \over 2}\widehat k$
$\overrightarrow {{r_H}}  = {a \over 2}\widehat i + {a \over 2}\widehat k$
$\overrightarrow {{r_H}}  - \overrightarrow {{r_g}}  = {a \over 2}\left( {\widehat j - \widehat i} \right)$

Answer

${1 \over 2}a\left( {\widehat k - \widehat i} \right)$

Answer

${1 \over 2}a\left( {\widehat j - \widehat i} \right)$

Answer

${1 \over 2}a\left( {\widehat j - \widehat k} \right)$

Answer

${1 \over 2}a\left( {\widehat i - \widehat k} \right)$

Motion in 2D & Vectors

In the cube of side ‘a’ shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be -

Choose the correct answer: