A toy car having mass m = 1.35 kg collides inelastically with a toy train of mass M = 3.80 kg.  Before the collision, the toy train is moving in the positive x-direction with a velocity of Vi = 2.45 m/s and the toy car is also moving in the positive x-direction with a velocity of vi = 4.65 m/s.  Immediately after the collision, the toy car is observed moving in the positive x-direction with a velocity of 1.85 m/s. (a) Determine  Vf,  the final velocity of the toy train. m/s(b) Determine the change  ΔKE  in the total kinetic energy. Assume friction and the rotation of the wheels are not important so that they do not affect  ΔKE.  J

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