1.

The displacement is given by \[x=2{{t}^{2}}+t+5\], the acceleration at  \[t=2s\] is                                  [EAMCET (Engg.) 1995]

A.             \[4\,\,m/{{s}^{2}}\] 
B.             \[8\,\,m/{{s}^{2}}\]
C.             \[10\,m/{{s}^{2}}\] 
D.             \[15\,m/{{s}^{2}}\]
Answer» B.             \[8\,\,m/{{s}^{2}}\]


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