Question 164025
{{{D=4.9t^2}}}, given formula where,
{{{D=356m}}}, then,
{{{356m=4.9t^2}}} ---> {{{cross(356)72.65306122m/cross(4.9)=cross(4.9)t^2/cross(4.9)}}}
{{{t^2=72.65306122}}}
{{{t=sqrt(72.65306122)}}}
{{{t=8.52seconds}}}, round -off
Thank you,
Jojo</pre>