A) 20 m North
B) 10\[\sqrt{2}\] m North-West
C) 10\[\sqrt{2}\]m South-East
D) 10 m North
Correct Answer: B
Solution :
\[v=\frac{{{v}_{1}}+{{v}_{2}}}{2}\] \[v=\frac{5\times {{10}^{6}}+2\times {{10}^{6}}}{2}=\frac{7}{2}\times {{10}^{6}}\] \[d=v\times t\] \[t=\frac{d}{v}=\frac{2.1\times {{10}^{-4}}\times {{10}^{-2}}}{\frac{7}{2}\times {{10}^{6}}}\] \[t=6\times {{10}^{-13}}s\]You need to login to perform this action.
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