A) 1 km/h
B) 3 km/h
C) 4 km/h
D) 5 km/h
Correct Answer: D
Solution :
Relative velocity of man w.r.t. rain, \[{{\overrightarrow{v}}_{rm}}={{\overrightarrow{v}}_{{{r}^{-}}}}-{{\overrightarrow{v}}_{m}}\] \[=4\hat{j}-3\hat{i}\] \[=-3\hat{i}+4\hat{j}\] or \[=5km/h\,|{{\overrightarrow{v}}_{rm}}|=\sqrt{{{(-3)}^{2}}+{{(4)}^{2}}}\] \[=\sqrt{9+16}\] \[=\sqrt{25}\]You need to login to perform this action.
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