Pls help me answer this for physics i already answered them but i want to check my answers . Its about collisions thank you

1. A ball of mass 3.8 kg, moving at 2.54 m/s eastward, strikes head on a ball of mass 1.2 kg. The balls stick together after the collision and come to a complete stop. What is the total final momentum of the scenario? (Consider eastward to be positive.) 2. An astronaut with mass 94 kg carries an empty oxygen tank of mass 94 kg. He and the tank are at rest when he throws the tank away from himself with a velocity of 1.1 m/s. What is the total initial momentum of the astronaut and tank? 3. An astronaut with mass 74 kg carries an empty oxygen tank of mass 13 kg. He and the tank are at rest when he throws the tank away from himself with a velocity of 2.7 m/s. What is the final velocity of the astronaut? 4.Miguel has a mass of 100 kg and is running toward the end zone at 7.1 m/s. Joey, who has a mass of 67 kg, runs at 14.8 m/s towards Miguel. They collide head-on and stay together. What is the total initial momentum of the two athletes? (Consider Miguel's direction to be positive.) 5. A shuffleboard player slides a puck of mass 1.09 kg towards the other end of the table with a velocity of 3.3 m/s where it strikes an opponent's stationary puck of mass 1 kg. What is the total initial momentum of the scenario