A railroad car of mass M is at rest on frictionless rails when a man of mass m starts moving on the car towards the engine. If the car recoils the speed v backwards on the rails, with what velocity is the man approaching the engine? Share with your friends Share 13 Vara answered this From the law of conservation of momentum,Momentum of man=Momentum of car+Momentum of man approaching enginemv=-Mv+mv'mv'=mv+Mv v'=v+Mmv =v1+Mm 2 View Full Answer
