I did something similar in the past. I had to take into account an impact of 40joules on a component.
By hand I got 40=1/2 m V² .... so for instance a mass of 8Kg at speed of 2.73m/s
Then in sim premium I used a Non Linear Dynamic simulation.
If I remember well one can define an initial velocity to a part. Make sure that mass is correct and that time step is small enough..
then a no penetration contact and that's it...:)
But this kind of computation is veeeery long, and sw simulation is not very efficient with this kind of simulation. It took me ages before getting something correct...many bugs and crashes.