A) \[3.14\,\,cm{{(\min )}^{-1}},\,\,20\,\,cm{{(\min )}^{-1}}\]
B) \[31.4\,\,cm{{(\min )}^{-1}},\,\,0.33\,\,cm\,\,{{s}^{-1}}\]
C) \[0.314\,\,cm{{(\min )}^{-1}},\,\,1\,\,cm{{(\min )}^{-1}}\]
D) \[314\,\,cm{{(\min )}^{-1}},\,\,0.1\,\,cm{{(\min )}^{-1}}\]
Correct Answer: B
Solution :
Distance\[=\pi r=3.14\times 10=31.4\,\,cm\], Displacement\[=2r=2\times 10=20\,\,cm\] Average velocity\[=\frac{S}{t}=\frac{20\,\,cm}{60\,\,s}\]\[=0.33\,\,cm\,\,{{s}^{-1}}\]
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