The position function of an object moving horizontally along a straight line as a function of time is $s(t)=8t^3-4t^2,$ in metres, at time, $t,$ in seconds. Determine the acceleration of the object at $t=4s.$

$0$

$56$

$124$

$148$

$192$

$200$

$248$

$352$

$384$

$480$

$512$Impossible to tell, because you can only determine velocity from the position function

None of the Above