2.Boxcar A, with a mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg and is initially at rest. The boxcars collide inelastically and move together after they get stuck. What is their combined velocity?

Answer 1

Ma*V = 1500*25 = 37,500 = Momentum
of Boxcar A.

(Ma+Mb)*V = 37,500
(1500+2000)V = 37,500
3500V = 37,500
V = 10.71 m/s.