A football player with a mass of 83 kg and a velocity of 3.4 m/s to the right collides head-on with another player with a mass of 98 kg and a velocity of 2.6 m/s to the left. What is their total initial momentum just before the collision? (Pay attention to positive and negative signs!)If the two football players from the previous question stick together after the collision, what is their final velocity (speed and direction)