A 10000kg coal truck strikes a parked in neutral ford aspire weighing only 1076kg. The coal truck, before the collision, is traveling at 15.28 meter per second (55kph). After the collision the two separate and the coal truck continues at 11.7 meters per second. What is the velocity of the aspire after the collision?

Hint - use conservation of momentum to solve this. Show us your attempt at this and we'll help you out if you get stuck.