2. A train engine has a mass of 3,000 kg. The freight car has a mass of 1,000 kg and is at rest (sitting still). The train engine approaches with a velocity of 2.0 m/s.
What is the momentum of the train engine before it hits the freight car?
https://talkandcomment. com/p/7c1962a2a8b3fdaa145042cc (voice note) *
Train engine
Freight car
O 2.0 kg*m/s
3,000 kg*m/s
0 6,000 kg*m/s
O 8,000 kg*m/s
3,000,000 kg*m/s