shristi

an object A 2.5kg is traveling at 25meters per second collides head on with a 5kg mass b calculate the velocity of the 5kg mass if 1.the mass b is initially at rest 2.traveling opposite to mass A at 20m/s 3.traveling in the same direction as A at 12m/s

a locomotive of mass 15000kg traveling at 2.5m/s collides and couples with a set of rail carts of mass 7000kg.calculate: 1.the combined velocity of the train and carts after impact 2.the loss in kinetic energy in the collision