Answer:
3 m/s
Explanation:
Kinetic energy of a body is given by the formula [tex]K= {1\over2} m v^2[/tex]. Let's replace everything we have and solve for what's left.
[tex]1125J = {1\over2}\cdot 250 kg \cdot v^2[/tex]
[tex]v^2 ={ 1125 \cdot 2 \over 250}}[/tex] or [tex]v= 3 {m \over s}[/tex]
