1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will be the resulting velocity of Car B?

Question

1.	Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will be the resulting velocity of Car B?

Damon · Answer

change in momentum of car A = 1250 (40) = 50,000 toward the west

so change in momentum of car B is 50,000 toward the east
50,000 = 2000 (east velocity - -25)

25 = east velocity + 25
east velocity = 0

stopped it dead in the water :)