Answer:
[tex]22.4\:\mathrm{kg\cdot m/s}[/tex]
Explanation:
Momentum is given by [tex]p=mv[/tex].
Let [tex]p_1[/tex] be the initial momentum of the object:
[tex]p_1=m\cdot v=22.4[/tex]
If we doubled the mass, the new mass would be [tex]2\cdot m[/tex], and if we halved the velocity, the new velocity would be [tex]\frac{1}{2}\cdot v[/tex].
Therefore, the final momentum would be:
[tex]p_f=2\cdot m\cdot \frac{1}{2}\cdot v=m\cdot v=\fbox{$22.4\:\mathrm{kg\cdot m/s}$}[/tex]..
