the ration of velocities acquired by a freely falling body at the end of 1 second ans 2 seconds is ____ ??

Here initial velocity u=0,a=9.8

At the end of 1 sec,velocity will be

v=u+at=0+9.8 x 1=9.8m/s

At the end of 2 sec,velocity v'=0+9.8 x 2=19.6m/s

Now v/v'=9.8/19.6=1/2

v : v'=1:2