A) \[(4\mathbf{\hat{i}}+2\mathbf{\hat{j}}-6\mathbf{\hat{k}})\]
B) \[(10\mathbf{\hat{i}}-6\mathbf{\hat{j}})\]
C) \[(4\mathbf{\hat{i}}-2\mathbf{\hat{j}})\]
D) \[(10\mathbf{\hat{i}}+6\mathbf{\hat{j}}-6\mathbf{\hat{k}})\]
Correct Answer: B
Solution :
Displacement = final position - initial position \[=(7\hat{i}-2\hat{j}-3\hat{k})-(-3\hat{i}+4\hat{j}-3\hat{k})\] \[=10\,\hat{i}-6\,\hat{j}\]
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