Explain how two rolling bowling balls of different masses can have the same momentum.

Momentum is equal to the mass of an object multiplied by the velocity of an object. The two bowling balls can have the same momentum if the bowling ball with less mass has a higher velocity, and vice versa. As long as the product of the mass and velocity of one bowling ball is equal to the product of the mass and velocity of the other, the bowling balls will have the same momentum.

Well, it is how hard you roll the ball with the one ball you have with a small mass don't have to roll that hard but the one with the bigger mass have to roll with a greater force.