Answer:
v = 40 [m/s].
Explanation:
Linear momentum is defined as the product of mass by Velocity. In this way, by means of the following equation, we can calculate the momentum.
[tex]P=m*v\\[/tex]
where:
m = mass [kg]
v = velocity [m/s]
[tex]P =20*10\\P =200 [kg*m/s][/tex]
Since all momentum is transferred, we can say that this momentum is equal for the mass of 5 [kg]. In this way, we can determine the speed after the impact.
[tex]v = P/m\\v = 200/5\\v = 40 [m/s][/tex]
