Kinematics Question 136

Question: The unit vector along $ \hat{i}+\hat{j} $ it’s

Options:

A) $ \hat{k} $

B) $ \hat{i}+\hat{j} $

C) $ \frac{\hat{i}+\hat{j}}{\sqrt{2}} $

D) $ \frac{\hat{i}+\hat{j}}{2} $

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Answer:

Correct Answer: C

Solution:

$ \hat{R} $

$ =\frac{{\vec{R}}}{|R|}=\frac{\hat{i}+\hat{j}}{\sqrt{1^{2}+1^{2}}}=\frac{1}{\sqrt{2}}\hat{i}+\frac{1}{\sqrt{2}}\hat{j} $



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