Question

What are some examples of momentum?

Answer 1

You must distinguish in linear momentum and angular momentum.
Linear momentum is the product of the mass and the velocity of an object, pratically it is its inertia.

Explanation:

Momentum indicates how hard is to stop an object, without any friction. The most important "example" of momentum is the variation of momentum respect time: when happens a this kind of variation, a force can be measured.