Question 983277
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{{{S=ut+(1/2)at^2}}}
{{{(1/2)at^2+ut-S=0}}}
{{{(1/2)(4)t^2+11t-6=0}}}
{{{2t^2+11t-6=0}}}
{{{(2t-1)(t+6)=0}}}
{{{2t-1=0}}} {{{OR}}} {{{t+6=0}}}
{{{t=1/2}}} {{{OR}}} {{{t=-6}}}