Question 315064
Free falling objects are under the action of constant acceleration due to gravity. 
.
.
Acceleration={{{9.8}}} m/s^2
.
.
The initial velocity is zero.
The final velocity follows the equation,
{{{vf=vi+at=0+9.8(0.250)=2.45}}} m/s
.
.
Average velocity
{{{Vave=(vi+vf)/2=(0+2.45)/2=1.225}}} m/s