Two train cars are coupled together, traveling together on a straight level track with a velocity of 1.50 m/s to the right. The leading Car A has a mass of 5,000 kg, while the trailing Car B has a mass of 12,000 kg. (Assume 3 significant figures on all masses.) A small explosion suddenly separates the two cars. Afterward, Car A has a velocity of 2.50 m/s to the right. Ignore all external friction on the train cars.

21. What is the net impulse receivedby Car A, in kgm/s? .What is the net impulse receivedby Car B, in kgm/s?