A small car of mass 2000-kg reared a stalled truck of mass 3000-kg on a straight road. The two vehicles got stuck together after the collision. If the small car was traveling at 30 m/s before the collision.

A: What was the speed of the two vehicles together right after collision ?

B: What is the kinetic energy loss of the system (small car + truck) during the collision ?

C: If the coefficient of kinetic friction is 0.80 between the tires and the road, what is the distance the two vehicles traveling before they come to a stop ?