The acceleration of a particle, starting from rest, varies with time according to the relation a = Kt + C, where K and C are constants of motion. The velocity ‘V’ of the particle after a time ‘t’ will be
A
Kt+Ct
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B
12Kt2+Ct
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C
12(Kt2+Ct)
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D
Kt2+12Ct
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Solution
The correct option is B12Kt2+Ct a=Kt+cdvdt=Kt+c⇒dv=(Kt+c)dt⇒∫dv=∫Ktdt+∫cdt⇒v=Kt22+ct