How can a bowling ball and a volleyball have the same momentum?

Answer 1

Linear momentum, p=mv, is proportional to mass and velocity.

Since the Bowling ball far outweighs the volleyball, the difference in velocity would have to be determined in order for them to possess the same amount of momentum.

If the volleyball is traveling at a high enough speed (orders of magnitude higher), they can both have the same momentum. Either that or fill the volleyball with concrete.