Question 567146
{{{ h = -6t^2 + s }}}
{{{ s = 125 }}} ft
find {{{ t }}} when {{{ h = 125/2 }}}
{{{ 125/2 = -6t^2 + 125 }}}
{{{ 125 = -12t^2 + 250 }}}
{{{ -12t^2 = -125 }}}
{{{ t^2 = 10.41666 }}}
{{{ t = 3.2275 }}}  sec