A  1.5 kg object moving to the right at 2.4  m/s overtakes and collides elastically with a 2.5 kg object moving in the same direction at 1.2 m/s.  Find the velocity of each object after collision. A.) v1f  =  0.9 m/s,    v2f  =  1.5 m/s B.) v1f  =  1.5 m/s,    v2f  =  -5.2 m/s C.) v1f  =  1.9 m/s,    v2f  =  -1.2 m/s D.) v1f  =  -4.0 m/s,    v2f  =  3.2 m/s

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