A) \[12.8\,\,km\,{{h}^{-1}}\]
B) \[6\,\,km\,{{h}^{-1}}\]
C) \[8\,\,km\,{{h}^{-1}}\]
D) \[10\,\,km\,{{h}^{-1}}\]
Correct Answer: B
Solution :
[b] \[{{v}_{r}}=\sqrt{{{v}_{R}}^{2}-v_{B}^{2}}=\sqrt{{{10}^{2}}-{{8}^{2}}}=6\,\,km\,{{h}^{-1}}\]You need to login to perform this action.
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