the initial velocity of Ball 1 is twice the initial velocity of Ball 2 and the masses are the same.

Question

Does this mean the masses are the same amount or just the same as the equations before this one?

Answer 1

When it is stated that "the masses are the same" in this context, it means that the masses of Ball 1 and Ball 2 are equal. It does not mean that the masses are the same as in any previous equations or comparisons.