Physical Science 1.12: 3.2 Momentum & Collisions

How do these balls compare in terms of momentum just before the goalie stops them?

A cougar runs with a velocity of 8.0 m/s west. If the cougar has a momentum of 352 kg·m/s, what is its mass? (p=mv)

The mass of an arrow is 0.01 kg, and it has a momentum of 0.2 kg·m/s to the left. What is the velocity of the arrow?

What type of collision would this be:

A tennis ball gets hit by a wad of gum midair. They stick together and continue flying.

A student (m = 60 kg) stands stationary on a skateboard, holding a heavy gym bag (m = 10 kg). If she throws the bag with a velocity of 5 m/s forward, what is her velocity? Remember: The direction is determined by the action and reaction forces.