Question

A.) A block of mass 1.12 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 4.23 m/s. It eventually collides with a second, stationary block, of mass 3.60 kg, head-on, and rebounds back to the south. The collision is 100% elastic. What will be the speeds of the 1.12-kg and 3.60-kg blocks, respectively, after this collision?

Multiple choice

2.22 m/s and 2.01 m/s

2.01 m/s and 2.22 m/s

1.71 m/s and 2.12 m/s

0.89 m/s and 2.17 m/s

Answer 1