Answer:
Were moving with momenta equal in magnitude and opposite in direction.
Step-by-step explanation:
As indicated by law of conservation of momentum , "the all out energy of any gathering of articles continues as before except if outside powers follow up on the items". They more likely than not been moving with equivalent and inverse force for their effect to have brought them both to rest since including equivalent yet inverse numbers will give 0. They were moving with equivalent and inverse energy.
We realize that, it can have equivalent masses, however except if they have a similar speed just as they won't stop, so the 'energy' must be equivalent.