A particle is moving in a straight line according to the formula \[s={{t}^{2}}+8t+12.\]If s be measured in metre and t be measured in second, then the average velocity of the particle in third second is

A particle is moving in a straight line according to the formula \[s={

1.	A particle is moving in a straight line according to the formula \[s={{t}^{2}}+8t+12.\]If s be measured in metre and t be measured in second, then the average velocity of the particle in third second is
A.	\[14\,m/\sec \]
B.	\[13\,m/\sec \]
C.	\[15\,m/\sec \]
D.	None of these
Answer» C. \[15\,m/\sec \]

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A particle is moving in a straight line according to the formula \[s={{t}^{2}}+8t+12.\]If s be measured in metre and t be measured in second, then the average velocity of the particle in third second is

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