Question 577440
Let {{{ d }}} = distance body falls
given:
{{{ d = k*t^2 }}} where {{{k}}} is some constant
{{{ 16 = k*1^2 }}}
{{{ k = 16 }}}
so, {{{ d = 16t^2 }}}
{{{ 144 = 16t^2 }}}
{{{ t^2 = 144/16 }}}
{{{ t^2 = 9 }}}
{{{ t = 3 }}}
It will take 3 sec