A) \[4\,\,m/{{s}^{2}}\]
B) \[8\,\,m/{{s}^{2}}\]
C) \[10\,m/{{s}^{2}}\]
D) \[15\,m/{{s}^{2}}\]
Correct Answer: A
Solution :
Displacement \[x=2{{t}^{2}}+t+5\] Velocity \[=\frac{dx}{dt}=4t+1\] Acceleration \[=\frac{{{d}^{2}}x}{d{{t}^{2}}}=4\] i.e. independent of time Hence acceleration \[=4\ m/{{s}^{2}}\]
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