A block of mass 1.30 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding wi

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A block of mass 1.30 kg is placed on a frictionless floor and
initially pushed northward, whereupon it begins sliding with a
constant speed of 5.12 m/s. It eventually collides with a second,
stationary block, of mass 4.82 kg, head-on, and rebounds back to
the south. The collision is 100% elastic. What will be the speeds
of the 1.30-kg and 4.82-kg blocks, respectively, after this
collision?
2.05 m/s and 2.56 m/s
1.18 m/s and 2.75 m/s
2.94 m/s and 2.18 m/s
2.18 m/s and 2.94 m/s