two barges full of salted toad guts have a collision. the red barge has a mass of 150000kg and is traveling northwest at 0.25m/s. the blue barge has a mass of 1000000kg and is traveling southeast at 0.1 m/s. after the collision the blue barge has a velocity of 0.32m/s to the northwest. what is the final velocity of the red barge? in the collision elastic? ​