After last week's physics classes, I have concluded that momentum is equal to the product of an object's mass and velocity. There's no specific unit for momentum, simply "kg m/s". In this picture, a small, multi colored ball is stationary while a larger, blue ball is rolling towards it. According to the law of conservation of momentum, momentum cannot be created or destroyed. This means that the larger ball's momentum didn't come out of no where. Before it was at rest like the small ball, but when I pushed it and increased it's velocity, I simply transferred momentum from my hand to the ball. Also, when the larger ball will come in contact with the small ball, the momentum will transfer over to the smaller ball. Since the smaller ball's mass is much less, but the momentum is the same (ignoring friction), the smaller ball will travel at a higher velocity than the higher ball did.
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