A) (10, 3, 2) cm
B) (8,-2, 1) cm
C) (0, 0, 0) cm
D) data not correct
Correct Answer: A
Solution :
\[Displacement\,\,=\,\,{{\overrightarrow{r}}_{f}}\,\,-\,\,{{\overrightarrow{r}}_{i}}\] \[{{\overrightarrow{r}}_{f}}-\left( 2\widehat{i}+5\widehat{j}+\widehat{k} \right)\,\,=\,\,8\widehat{i}-2\widehat{j}+\widehat{k}\] \[{{\overrightarrow{r}}_{f}}=\left( 8\widehat{i}-5\widehat{j}+\widehat{k} \right)+\left( 2\widehat{i}+5\widehat{j}+\widehat{k} \right)\] \[{{\overrightarrow{r}}_{f}}=10\widehat{i}+3\widehat{j}+2\widehat{k}\,;\,\,\,Coordinates\,\,=\,\,\left( 10,\text{ }3,\text{ }2 \right)\]
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