During a football game, Player A (110 kg) is running north with a velocity of 5 m/s. He collides with Player B (130 kg), who is running south to intercept him with a velocity of 4.5 m/s. (a) What is the total momentum of the system before the collision?
1) 215 kg*m/s
2) 225 kg*m/s
3) 235 kg*m/s
4) 245 kg*m/s