The impulse is defined as:
[tex]I=m(v_f-v_0)[/tex]In this case we know that:
• The mass is 65 kg.
,• The initial velocity is 50 m/s
,• The final velocity is 25 m/s.
Plugging these values in the definition we have:
[tex]\begin{gathered} I=(65)(25-50) \\ I=-1625 \end{gathered}[/tex]Therefore, the impulse is -1625 kg*m/s