Twomasses,m1=2kgandm2=4kgarefoundinfreespacehavingvelocitiesofV1i= ‐ 3im/sandV2i= ‐4jm/sbeforetheycollidefor2ms.Aftertheycollide,m1isobservedtohave1/3ofitsinitialspeedinthesamedirection. a)Find V 2f, the velocity of m2 after the collision in unit vector notation. b)Find Kf, the total kinetic energy after the collision. c)Find V cmI, the velocity vector of the center of mass before the collision

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