Question

help, please.

12 Instructions: Show your starting equations and show essential steps of subsequent work. Enclose final answer(s) in a box. Score: points 1. [6] Three identical train cars (mass m), coupled together, are rolling east at speed vo. A fourth car (also mass m) traveling east at 4vo catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car (mass 2m) moving at a velocity of vo to the cast. These all couple connect to make a single five-car train. What is the speed of the five-car train? State your answer in terms of vo; i.e., Vs ~ 3.75 Vo. | V - ? 4V ଜ ସକଲ କଲିକ କି ଭକଇଜର

Answer 1

Ars Uvoo N4 Just Before Collision Just after Collision . collision - Momentum is conserved here before and just after mi(40.) + 3m v. = 4m (Vu) 1 Vu = 7mo = Ivo - un ū o Now this 2 train car train Las moving with (as mowine will system collides with anothes speed up and having mass 2 mó Just Before Just after مع الله just collision 1. Momentum kefore Collision = Momentum just after Collision um V4 tamoo - 6m (Vg) V = 4m/Zvo) tam oo - gm vo 6 m 6 m T US = 9 Vo = 1050o Answer