A 328 kg car moving at 19.1 m/s hits from behind another car moving at 13.0m/s in the same direction. If the second car has a mass of 790kg and a new speed of 15.1m/s what is the velocity of the first car after the collision?

Answer 1

This is a conservation of momentum problem. I assume you know the first principles. Someone will be happy to critique your work.

P.S.: note the correct spelling of the subject

Answer 2

13.45