more request

The arrow length can be proportioned between the two velocities?
So if i want to key in v1 = 500 m/s, the space constraints wouldn't allow
>> it. So i wrote

[color=blue][b]done, it saturated[/b][/color]

>> M before explosion
>> U before explosion
>> Fraction of masses after explosion or m1 and m2
>> To calculate:
>> Initial KE
>> Fraction of Final velocities
>> Fraction of Final KEs
>> Formula:
>> MU = m1v1 + m2v2

[color=blue][b]not done, not sure if it is can be done[/b][/color]