Question

a 12,000 kg truck is moving right at 22 m/s collides with and sticks to a 1200 kg car moving to the right at 16 m/s. With what speed do the two vehicles move after the collision and in what direction?

Answer 1

everything is moving right so will continue to do so

final momentum = initial momentum

initial momentum =12,000*22 + 1200*16

final momentum = (12,000+1,200) v