Answer:
4 m/s
Explanation:
Momentum is defined as:
[tex]p=mv[/tex]
where
m is the mass of the object
v is its velocity
For the object in this problem, we know:
p = 200 kg m/s is the momentum
m = 50 kg is the mass
Solving for the velocity, we find:
[tex]v=\frac{p}{m}=\frac{200}{50}=4 m/s[/tex]