Wile E. Coyote attempts to knock out the roadrunner with a spring loaded punch. His attempt backfires, and the direction of the punch's force is somehow reversed. This clip illustrates a violation of the conservation of momentum.
In a violation of the conservation of momentum, Wile E. Coyote launches himself out of a canon with the hope that it will help him catch the Road Runner.
Baseball is composed of several layer of yarn. Two types of rubber and a cushioned cork center. It's mass gives it great momentum. Velocity also plays a role in momentum, so if a ball has less mass, you need to hit it harder with a greater velocity.