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} $
Correct Answer: C $ \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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