Train cars are coupled together by being bumped against each other. a 380000 kg loaded car was moving with speed 0.65 m/s and a 115000 kg empty train car was moving with speed 0.55 m/s before the two train cars bump into each other and couple together. it takes 2.2 seconds for the coupling to be completed. now assume both cars were moving in opposite directions before coupling together. what is the speed of the train cars after they are coupled together now
